What is a PRP ?
A PRP is a probable prime number, a number that nobody knows how to prove
or disprove its primality.
Here are some criterions that can be used to recognize these numbers
:
- N does not have any prime factor up to 2^32.
- N cannot be trivially written into a product.
- Take 3 square-free consecutive bases such that (b1/N)=(b2/N)=(b3/N)= -1. N
should be such that b1^((N-1)/2)=b2^((N-1)/2)=b3^((N-1)/2)= -1 (mod N).
- Take a prime base such that (b/N)= -1 and b<>b1<>b2<>b3.
N should pass the strong test in base b.
- or more (if someone has got an idea) !!!
Submit your PRPs
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Rank |
Probable prime |
Digits (> 50000) |
Who ? |
When ? |
2751 | (203*10^140615-11)/3 | 140617 | Robert Price | 12/2020 |
2752 | (85*10^140609+473)/9 | 140610 | Robert Price | 01/2020 |
2753 | 39231^3836+3836^39231 | 140600 | Hans Havermann | 06/2021 |
2754 | 2^466866-1840571 | 140541 | Enzo Doria | 06/2015 |
2755 | 2^466829-459523 | 140530 | Enzo Doria | 05/2015 |
2756 | 2^466692-113213 | 140489 | Enzo Doria | 07/2014 |
2757 | 23*10^140464-3 | 140466 | Robert Price | 10/2021 |
2758 | 31335^30364+30364^31335 | 140455 | Hans Havermann | 05/2021 |
2759 | 32795^19126+19126^32795 | 140416 | Hans Havermann | 05/2021 |
2760 | (44*10^140410-503)/9 | 140411 | Robert Price | 12/2018 |
2761 | 153^64265-2 | 140400 | Lelio R Paula | 11/2017 |
2762 | (112*10^140357-1)/3 | 140359 | Serge Batalov | 12/2014 |
2763 | (29*10^140337-17)/3 | 140338 | Robert Price | 09/2019 |
2764 | 2^466181-112735 | 140335 | Enzo Doria | 07/2014 |
2765 | (16*10^140290-37)/3 | 140291 | Robert Price | 05/2021 |
2766 | (5*10^140281-119)/3 | 140282 | Robert Price | 03/2018 |
2767 | 34568^11415+11415^34568 | 140259 | Hans Havermann | 05/2021 |
2768 | (27*2^465872+1)/691 | 140241 | Lelio R Paula | 08/2015 |
2769 | 33632^14781+14781^33632 | 140236 | Hans Havermann | 05/2021 |
2770 | 31803^25670+25670^31803 | 140233 | Hans Havermann | 05/2021 |
2771 | 2^465803-114817 | 140221 | Enzo Doria | 05/2015 |
2772 | floor(Pi*10^140344)%10^140165 | 140165 | Serge Batalov | 08/2012 |
2773 | 2^465503-112735 | 140131 | Enzo Doria | 07/2014 |
2774 | (16*10^140091+167)/3 | 140092 | Robert Price | 06/2019 |
2775 | (8*10^140087-137)/3 | 140088 | Robert Price | 03/2022 |
2776 | 6^179964+179964^6-1 | 140040 | Robert Price | 04/2014 |
2777 | (89*10^140008-179)/9 | 140009 | Robert Price | 12/2019 |
2778 | (29*2^465077-1)/9 | 140003 | Lelio R Paula | 08/2015 |
2779 | 2^465072-344789 | 140001 | Enzo Doria | 07/2015 |
2780 | 34742^10683+10683^34742 | 139965 | Hans Havermann | 05/2021 |
2781 | 5*10^139945+81 | 139946 | Robert Price | 03/2019 |
2782 | 32648^19335+19335^32648 | 139941 | Hans Havermann | 05/2021 |
2783 | 2^464864-17 | 139939 | Lelio R Paula | 09/2017 |
2784 | 8*10^139920+51 | 139921 | Robert Price | 08/2019 |
2785 | (85*10^139913-1)/3 | 139915 | Robert Price | 02/2020 |
2786 | 31203^30436+30436^31203 | 139896 | Hans Havermann | 04/2021 |
2787 | 4*10^139839-27 | 139840 | Robert Price | 08/2021 |
2788 | 33582^14573+14573^33582 | 139821 | Hans Havermann | 05/2021 |
2789 | (17^113621+1)/18 | 139804 | Paul Bourdelais | 09/2011 |
2791 | 2*10^139800-21 | 139801 | Robert Price | 09/2020 |
2790 | 32628^19261+19261^32628 | 139801 | Hans Havermann | 04/2021 |
2792 | (13*10^139782+191)/3 | 139783 | Robert Price | 11/2018 |
2793 | (64*10^139776+791)/9 | 139777 | Robert Price | 01/2022 |
2794 | (695*10^139772+7)/9 | 139774 | Robert Price | 12/2021 |
2795 | (19*2^464312-1)/3 | 139773 | Lelio R Paula | 08/2015 |
2796 | (74*10^139723+133)/9 | 139724 | Robert Price | 06/2019 |
2797 | 3*10^139722+13 | 139723 | Robert Price | 07/2018 |
2798 | 31577^26592+26592^31577 | 139721 | Hans Havermann | 05/2021 |
2799 | 77*10^139692+3 | 139694 | Robert Price | 06/2020 |
2800 | (31*2^463970+1)/5 | 139670 | Lelio R Paula | 08/2015 |
2801 | (18203^(2^15)+(18201)^(2^15))/2 | 139597 | Robert Price | 05/2018 |
2802 | 39640^3321+3321^39640 | 139584 | Hans Havermann | 05/2021 |
2803 | 36663^6410+6410^36663 | 139571 | Hans Havermann | 05/2021 |
2804 | 2^463633-2788423 | 139568 | Enzo Doria | 11/2015 |
2805 | 33659^13978+13978^33659 | 139532 | Hans Havermann | 05/2021 |
2806 | 31811^24318+24318^31811 | 139521 | Hans Havermann | 04/2021 |
2807 | 34149^12172+12172^34149 | 139512 | Hans Havermann | 04/2021 |
2808 | (29*10^139476+313)/9 | 139477 | Robert Price | 04/2021 |
2809 | 31721^24940+24940^31721 | 139474 | Hans Havermann | 05/2021 |
2810 | 32833^17698+17698^32833 | 139473 | Hans Havermann | 05/2021 |
2811 | 2^463271-109501 | 139459 | Enzo Doria | 04/2014 |
2812 | (5*10^139457+79)/3 | 139458 | Robert Price | 03/2018 |
2813 | 2^463237-99 | 139449 | Lelio R Paula | 09/2017 |
2814 | (49*10^139442+383)/9 | 139443 | Robert Price | 04/2019 |
2815 | 31155^29902+29902^31155 | 139441 | Hans Havermann | 05/2021 |
2816 | (7*10^139417-547)/9 | 139417 | Robert Price | 01/2018 |
2817 | (10^139398+191)/3 | 139398 | Robert Price | 02/2018 |
2818 | 23*10^139386-3 | 139388 | Robert Price | 10/2021 |
2819 | 2^463019+79463 | 139383 | Enzo Doria | 06/2016 |
2820 | 3^292129-112756 | 139381 | Enzo Doria | 07/2014 |
2821 | (15*2^462951+1)/527 | 139361 | Lelio R Paula | 08/2015 |
2822 | 31922^23205+23205^31922 | 139359 | Hans Havermann | 05/2021 |
2824 | 2^462855-1865707 | 139334 | Enzo Doria | 02/2016 |
2823 | 31237^28876+28876^31237 | 139334 | Hans Havermann | 05/2021 |
2825 | (86*10^139315+121)/9 | 139316 | Robert Price | 08/2019 |
2826 | 2^462786-292043 | 139313 | Enzo Doria | 08/2015 |
2827 | 38915^3798+3798^38915 | 139299 | Hans Havermann | 05/2021 |
2828 | (26*10^139289+1)/9 | 139290 | Serge Batalov | 05/2010 |
2829 | 34065^12248+12248^34065 | 139260 | Hans Havermann | 05/2021 |
2830 | 36425^6654+6654^36425 | 139256 | Hans Havermann | 05/2021 |
2831 | 39252^3527+3527^39252 | 139243 | Hans Havermann | 05/2021 |
2832 | (17*10^139239+67)/3 | 139240 | Robert Price | 01/2019 |
2833 | 31887^23248+23248^31887 | 139231 | Hans Havermann | 05/2021 |
2834 | (25*10^139210-97)/9 | 139211 | Robert Price | 01/2022 |
2835 | 2^462238-935 | 139148 | Yves Minet | 02/2014 |
2836 | (29*10^139134-119)/9 | 139135 | Robert Price | 12/2021 |
2837 | (109*10^139100-7)/3 | 139102 | Robert Price | 03/2021 |
2838 | 38744^3885+3885^38744 | 139068 | Hans Havermann | 05/2021 |
2839 | 31112^29499+29499^31112 | 139065 | Hans Havermann | 05/2021 |
2840 | 2*10^139043-63 | 139044 | Robert Price | 01/2022 |
2841 | 36390^6613+6613^36390 | 139025 | Hans Havermann | 04/2021 |
2842 | 2*10^138975+33 | 138976 | Robert Price | 11/2021 |
2843 | 42437^1882+1882^42437 | 138966 | Hans Havermann | 05/2021 |
2844 | 32151^20990+20990^32151 | 138958 | Hans Havermann | 05/2021 |
2845 | 32154^20933+20933^32154 | 138933 | Hans Havermann | 04/2021 |
2846 | 31082^29499+29499^31082 | 138931 | Hans Havermann | 04/2021 |
2847 | 2^461228+1870441 | 138844 | Enzo Doria | 05/2016 |
2848 | 2^461204-113675 | 138837 | Enzo Doria | 08/2014 |
2849 | (2^461139-7)/47 | 138815 | Lelio R Paula | 08/2015 |
2850 | (17*10^138812-521)/9 | 138813 | Robert Price | 04/2018 |
2851 | 3*10^138811-11 | 138812 | Robert Price | 07/2018 |
2852 | (28*10^138768+173)/3 | 138769 | Robert Price | 12/2019 |
2853 | (17*2^460963+1)/124051613 | 138757 | Lelio R Paula | 08/2015 |
2854 | (379*10^138737-1)/9 | 138739 | Robert Price | 02/2020 |
2855 | (43*10^138648+101)/9 | 138649 | Robert Price | 11/2018 |
2856 | 2^460567-113541 | 138645 | Enzo Doria | 08/2014 |
2857 | (10^138622+161)/9 | 138622 | Robert Price | 09/2021 |
2858 | 7*10^138604+3 | 138605 | Robert Price | 08/2015 |
2859 | (133*10^138600+17)/3 | 138602 | Robert Price | 11/2021 |
2860 | 33912^12203+12203^33912 | 138581 | Hans Havermann | 05/2021 |
2861 | 2^460330+69 | 138574 | Lelio R Paula | 09/2017 |
2862 | (17*10^138569-77)/3 | 138570 | Robert Price | 08/2019 |
2863 | 31186^27725+27725^31186 | 138556 | Hans Havermann | 05/2021 |
2864 | (16*10^138545+89)/3 | 138546 | Robert Price | 03/2021 |
2865 | 39753^3056+3056^39753 | 138546 | Hans Havermann | 05/2021 |
2866 | 31282^26847+26847^31282 | 138545 | Hans Havermann | 05/2021 |
2867 | 6*10^138520-37 | 138521 | Robert Price | 02/2021 |
2869 | 2^460078-69581 | 138498 | Enzo Doria | 12/2015 |
2868 | 31830^22447+22447^31830 | 138498 | Hans Havermann | 05/2021 |
2870 | 37384^5065+5065^37384 | 138492 | Hans Havermann | 05/2021 |
2871 | 34774^9585+9585^34774 | 138456 | Hans Havermann | 05/2021 |
2872 | 10^138444-5001 | 138444 | Robert Price | 12/2021 |
2873 | 2^459768+1531 | 138404 | Lelio R Paula | 06/2012 |
2874 | (266*10^138328-17)/3 | 138330 | Robert Price | 07/2020 |
2875 | 32963^15696+15696^32963 | 138306 | Hans Havermann | 05/2021 |
2876 | 2^459343-113611 | 138277 | Enzo Doria | 08/2014 |
2877 | (28*10^138240+113)/3 | 138241 | Robert Price | 03/2020 |
2878 | 2^459199+1874393 | 138233 | Enzo Doria | 06/2016 |
2879 | 33339^14002+14002^33339 | 138230 | Hans Havermann | 05/2021 |
2880 | 2^459063-345307 | 138192 | Enzo Doria | 06/2015 |
2881 | 2*10^138162-43 | 138163 | Robert Price | 04/2018 |
2882 | 2^458927-112747 | 138151 | Enzo Doria | 06/2014 |
2883 | 2^458927-69217 | 138151 | Enzo Doria | 11/2015 |
2884 | 30907^29458+29458^30907 | 138130 | Hans Havermann | 05/2021 |
2885 | 32882^15837+15837^32882 | 138094 | Hans Havermann | 05/2021 |
2886 | 39252^3295+3295^39252 | 138083 | Hans Havermann | 05/2021 |
2887 | 33789^12190+12190^33789 | 138062 | Hans Havermann | 06/2021 |
2888 | 555555*2^458524+1513 | 138036 | Darren Bedwell | 08/2009 |
2889 | 30931^29002+29002^30931 | 138028 | Hans Havermann | 05/2021 |
2890 | 2^458465+2^32+1 | 138012 | T. D. Noe | 06/2007 |
2891 | 32206^19275+19275^32206 | 138003 | Hans Havermann | 05/2021 |
2892 | 2^458321-113053 | 137969 | Enzo Doria | 07/2014 |
2893 | 2^458298+79459 | 137962 | Enzo Doria | 06/2016 |
2894 | 2^458248-21815 | 137947 | Enzo Doria | 07/2013 |
2895 | 2^458194+1876549 | 137931 | Enzo Doria | 07/2016 |
2896 | (318259#+325270)/(2^2*5*11*2957) | 137907 | Makoto Morimoto | 10/2017 |
2897 | (318259#+2625)/(3^2*5*7^5*22965193) | 137899 | Makoto Morimoto | 06/2019 |
2898 | (793*10^137887+53)/9 | 137889 | Robert Price | 01/2022 |
2899 | 2^457937+57 | 137853 | Lelio R Paula | 09/2017 |
2900 | (8*10^137845+13)/3 | 137846 | Robert Price | 06/2018 |
2901 | 2^457822+105 | 137819 | Donovan Johnson | 06/2006 |
2902 | 2^457754-113711 | 137798 | Enzo Doria | 09/2014 |
2903 | 11^132315-360 | 137792 | Enzo Doria | 09/2012 |
2904 | 32072^19689+19689^32072 | 137725 | Hans Havermann | 06/2021 |
2905 | 44592^1225+1225^44592 | 137707 | Hans Havermann | 05/2021 |
2906 | 2^457347-37 | 137676 | Lelio R Paula | 09/2017 |
2907 | 2^457322-2786393 | 137668 | Enzo Doria | 10/2015 |
2908 | gcd(Phi(699340,10),(10^34967+1)^3*(10^34967+1+10^17484)-(10^69934+10^34967)*(10^17484-1)+10^104901) | 137664 | Serge Batalov | 04/2015 |
2909 | 34015^11134+11134^34015 | 137647 | Hans Havermann | 06/2021 |
2910 | 2^457240-59939 | 137643 | Enzo Doria | 10/2015 |
2911 | (856*10^137633-1)/9 | 137635 | Robert Price | 03/2020 |
2912 | 36232^6289+6289^36232 | 137631 | Hans Havermann | 05/2021 |
2913 | 2^457120-21575 | 137607 | Enzo Doria | 07/2013 |
2914 | (11*2^456978+1)/15 | 137564 | Lelio R Paula | 07/2015 |
2915 | 30963^27722+27722^30963 | 137564 | Hans Havermann | 04/2021 |
2916 | 33722^12003+12003^33722 | 137562 | Hans Havermann | 06/2021 |
2917 | (7*25^98399+10613)/12 | 137556 | Curtis Bright | 05/2015 |
2918 | 41901^1918+1918^41901 | 137555 | Hans Havermann | 06/2021 |
2919 | 32930^15021+15021^32930 | 137539 | Hans Havermann | 05/2021 |
2920 | 31178^25785+25785^31178 | 137538 | Hans Havermann | 05/2021 |
2921 | 419^52446+52446^419 | 137525 | Norbert Schneider | 11/2020 |
2922 | 2^456796-113513 | 137510 | Enzo Doria | 08/2014 |
2923 | 31788^21137+21137^31788 | 137485 | Hans Havermann | 04/2021 |
2924 | (7*2^456655+1)/39 | 137467 | Lelio R Paula | 07/2015 |
2925 | 2^456503-114361 | 137422 | Enzo Doria | 01/2015 |
2926 | (11*2^456387+1)/19 | 137386 | Lelio R Paula | 07/2015 |
2927 | 36248^6147+6147^36248 | 137332 | Hans Havermann | 05/2021 |
2928 | 31986^19651+19651^31986 | 137329 | Hans Havermann | 05/2021 |
2929 | 31817^20656+20656^31817 | 137292 | Hans Havermann | 05/2021 |
2930 | (71*10^137250+1)/9 | 137251 | Serge Batalov | 05/2010 |
2931 | 2^455922+76249 | 137247 | Enzo Doria | 05/2016 |
2932 | 31310^24171+24171^31310 | 137241 | Hans Havermann | 05/2021 |
2933 | 14^119741-119741^14 | 137239 | Serge Batalov | 04/2016 |
2934 | 35014^8297+8297^35014 | 137218 | Hans Havermann | 05/2021 |
2935 | (19*2^455760+1)/3455 | 137196 | Lelio R Paula | 07/2015 |
2937 | 124^(2^16)+57^(2^16) | 137195 | Valeryi Kuryshev | 02/2011 |
2936 | 124^65536+57^65536 | 137195 | Serge Batalov | 03/2018 |
2938 | 2^455689+72677 | 137177 | Enzo Doria | 04/2016 |
2939 | (17948!)^2+Prime(17948) | 137118 | Robert Price | 08/2014 |
2940 | 31287^24128+24128^31287 | 137116 | Hans Havermann | 05/2021 |
2941 | (37^87421-1)/36 | 137093 | Robert Price | 03/2012 |
2942 | 36233^6070+6070^36233 | 137077 | Hans Havermann | 05/2021 |
2943 | 38418^3697+3697^38418 | 137070 | Hans Havermann | 04/2021 |
2944 | 2^455323-57 | 137066 | Lelio R Paula | 09/2017 |
2945 | (56*10^137019+583)/9 | 137020 | Robert Price | 08/2021 |
2946 | (73*17^111333-9)/16 | 136991 | Curtis Bright | 05/2015 |
2947 | 2^455025-112723 | 136977 | Enzo Doria | 06/2014 |
2948 | 33876^11039+11039^33876 | 136959 | Hans Havermann | 05/2021 |
2949 | 35142^7873+7873^35142 | 136919 | Hans Havermann | 05/2021 |
2950 | 66*10^136894+7 | 136896 | Robert Price | 07/2020 |
2951 | 2^454675-1777 | 136871 | Yves Minet | 10/2011 |
2952 | 31676^20931+20931^31676 | 136866 | Hans Havermann | 05/2021 |
2953 | 3*10^136829+29 | 136830 | Robert Price | 05/2018 |
2954 | 4*10^136813-57 | 136814 | Robert Price | 10/2018 |
2955 | (6092*28^94536-143)/9 | 136812 | Curtis Bright | 05/2015 |
2956 | 37359^4588+4588^37359 | 136795 | Hans Havermann | 05/2021 |
2957 | 2^454348-53 | 136773 | Lelio R Paula | 09/2017 |
2958 | 31^91680-2 | 136729 | Lelio R Paula | 05/2017 |
2959 | 2^454199-113697 | 136728 | Enzo Doria | 09/2014 |
2960 | 30785^27622+27622^30785 | 136725 | Hans Havermann | 05/2021 |
2961 | 32973^14014+14014^32973 | 136725 | Hans Havermann | 05/2021 |
2963 | 7*10^136716+69 | 136717 | Robert Price | 07/2019 |
2962 | 36002^6273+6273^36002 | 136717 | Hans Havermann | 05/2021 |
2964 | 6*10^136692+53 | 136693 | Robert Price | 05/2020 |
2965 | (13*10^136687+47)/3 | 136688 | Robert Price | 10/2018 |
2966 | 2^453935-2791357 | 136649 | Enzo Doria | 01/2016 |
2967 | 2^453906-69131 | 136640 | Enzo Doria | 11/2015 |
2968 | 33232^12915+12915^33232 | 136620 | Hans Havermann | 05/2021 |
2969 | 2^453791+1873913 | 136605 | Enzo Doria | 06/2016 |
2970 | 34166^9951+9951^34166 | 136592 | Hans Havermann | 05/2021 |
2971 | (21*2^453740-1)/2735 | 136588 | Lelio R Paula | 07/2015 |
2972 | 31102^24635+24635^31102 | 136587 | Hans Havermann | 05/2021 |
2973 | 580^49413+49413^580 | 136550 | Norbert Schneider | 02/2019 |
2974 | 2^453503-2788297 | 136519 | Enzo Doria | 11/2015 |
2975 | 34989^7958+7958^34989 | 136486 | Hans Havermann | 12/2020 |
2976 | (2*10^136484+187)/9 | 136484 | Robert Price | 06/2022 |
2977 | 31007^25158+25158^31007 | 136452 | Hans Havermann | 11/2020 |
2978 | 2^453267-113827 | 136447 | Enzo Doria | 09/2014 |
2979 | 32234^17085+17085^32234 | 136435 | Hans Havermann | 12/2020 |
2980 | 2^453102+1877629 | 136398 | Enzo Doria | 08/2016 |
2981 | 31016^24981+24981^31016 | 136397 | Hans Havermann | 12/2020 |
2982 | (62*10^136384-791)/9 | 136385 | Robert Price | 06/2019 |
2983 | 34171^9798+9798^34171 | 136382 | Hans Havermann | 12/2020 |
2984 | (17*10^136354-113)/3 | 136355 | Robert Price | 06/2021 |
2985 | 32756^14541+14541^32756 | 136350 | Hans Havermann | 11/2020 |
2986 | 32205^17086+17086^32205 | 136313 | Hans Havermann | 12/2020 |
2987 | (25*10^136303+161)/3 | 136304 | Robert Price | 09/2019 |
2988 | 35337^7196+7196^35337 | 136299 | Hans Havermann | 12/2020 |
2989 | (182*10^136291+1)/3 | 136293 | Robert Price | 02/2020 |
2990 | (88*10^136234+83)/9 | 136235 | Robert Price | 03/2022 |
2991 | 23*10^136225-7 | 136227 | Robert Price | 02/2020 |
2992 | L(651821) | 136223 | Henri Lifchitz | 09/2008 |
2993 | 2^452460+77701 | 136205 | Enzo Doria | 05/2016 |
2994 | 2^452440-114755 | 136199 | Enzo Doria | 04/2015 |
2995 | 32286^16489+16489^32286 | 136157 | Hans Havermann | 11/2020 |
2996 | (47*10^136141+493)/9 | 136142 | Robert Price | 03/2019 |
2997 | 40392^2339+2339^40392 | 136082 | Hans Havermann | 12/2020 |
2998 | 2*10^136057-43 | 136058 | Robert Price | 04/2018 |
2999 | (2^451956-5)/181 | 136051 | Lelio R Paula | 07/2015 |
3000 | 2^451947-22165 | 136050 | Enzo Doria | 07/2013 |