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) !!!
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Rank |
Probable prime |
Digits (> 50000) |
Who ? |
When ? |
6001 | (2^385557+2214)/2 | 116064 | Stefano Morozzi | 09/2020 |
6002 | 29431^8776+8776^29431 | 116056 | Hans Havermann | 01/2021 |
6003 | (266*10^116024-17)/3 | 116026 | Robert Price | 07/2020 |
6004 | 30263^6820+6820^30263 | 116022 | Hans Havermann | 02/2021 |
6005 | 2^385410+71893 | 116020 | Enzo Doria | 04/2016 |
6006 | 38225^1084+1084^38225 | 116014 | Hans Havermann | 02/2021 |
6007 | 26548^23433+23433^26548 | 116011 | Hans Havermann | 02/2021 |
6008 | 12^107422-11 | 115928 | Riley Fisher | 12/2023 |
6009 | (25*2^385091+1)/27 | 115924 | Lelio R Paula | 04/2014 |
6010 | (11*10^115910-131)/3 | 115911 | Robert Price | 09/2018 |
6011 | 2^384953-111943 | 115883 | Paul Bourdelais | 02/2012 |
6012 | 43^70942-2 | 115882 | Lelio R Paula | 04/2014 |
6013 | (94*10^115879-7)/3 | 115881 | Robert Price | 03/2020 |
6014 | 7*10^115863+3 | 115864 | Robert Price | 08/2015 |
6015 | 2^384834+93 | 115847 | Donovan Johnson | 07/2008 |
6016 | 2^384809+71297 | 115840 | Enzo Doria | 04/2016 |
6017 | (55*10^115829+323)/9 | 115830 | Robert Price | 10/2021 |
6018 | (7*2^384759-1)/5 | 115825 | Lelio R Paula | 04/2014 |
6019 | 31348^4951+4951^31348 | 115822 | Hans Havermann | 02/2021 |
6020 | (793*10^115810+53)/9 | 115812 | Robert Price | 01/2022 |
6021 | (71*10^115810-17)/9 | 115811 | Ray Chandler | 08/2011 |
6022 | (97*10^115794-1)/3 | 115796 | Serge Batalov | 12/2014 |
6023 | 31115^5266+5266^31115 | 115794 | Hans Havermann | 02/2021 |
6024 | 2*10^115784-27 | 115785 | Robert Price | 05/2018 |
6025 | 10^115773+126739 | 115774 | Patrick De Geest | 04/2018 |
6027 | 10^115773-1000000001 | 115773 | Robert Price | 03/2018 |
6026 | 10^115773-396221 | 115773 | Patrick De Geest | 04/2018 |
6028 | (2^384582+778)/2 | 115771 | Stefano Morozzi | 09/2020 |
6029 | 30537^6178+6178^30537 | 115762 | Hans Havermann | 01/2021 |
6030 | 2^384530+1874305 | 115756 | Enzo Doria | 06/2016 |
6031 | (3*2^384524-1)/7631 | 115750 | Lelio R Paula | 03/2014 |
6032 | 28275^12406+12406^28275 | 115748 | Hans Havermann | 01/2021 |
6033 | (44*10^115697-413)/9 | 115698 | Robert Price | 03/2019 |
6034 | 31408^4825+4825^31408 | 115692 | Hans Havermann | 02/2021 |
6035 | (2^384317+1026)/2 | 115691 | Stefano Morozzi | 09/2020 |
6036 | 2^384312+81091 | 115690 | Yves Minet | 02/2010 |
6037 | (2^384265+2150)/2 | 115675 | Stefano Morozzi | 09/2020 |
6038 | (2^384246+2182)/2 | 115670 | Stefano Morozzi | 09/2020 |
6039 | (4*10^115668-79)/3 | 115669 | Robert Price | 02/2018 |
6040 | (2^384193+242)/2 | 115654 | Stefano Morozzi | 09/2020 |
6041 | (266947#+1267)/(7^2*181) | 115647 | Makoto Morimoto | 06/2019 |
6042 | (266947#+273808)/(2*109*157) | 115646 | Makoto Morimoto | 10/2017 |
6043 | 18^92125-92125^18 | 115642 | Dylan Delgado | 08/2019 |
6044 | 3^242337-4042 | 115625 | Enzo Doria | 05/2014 |
6045 | (17699*31^77516-29)/30 | 115608 | Eric Chen | 05/2024 |
6046 | (2^383931+674)/2 | 115575 | Stefano Morozzi | 09/2020 |
6047 | 7*10^115561+79 | 115562 | Robert Price | 07/2019 |
6048 | (2^383872+3046)/2 | 115557 | Stefano Morozzi | 09/2020 |
6049 | (11*2^383859-13)/15 | 115553 | Renaud Lifchitz | 03/2011 |
6050 | 2^383780-3149 | 115530 | Yves Minet | 10/2014 |
6051 | (41*10^115523-383)/9 | 115524 | Robert Price | 11/2018 |
6052 | 27316^16923+16923^27316 | 115506 | Hans Havermann | 02/2021 |
6053 | (2^383618+618)/2 | 115481 | Stefano Morozzi | 09/2020 |
6054 | 2^383560-455 | 115464 | Yves Minet | 03/2012 |
6055 | (2^383544+5)/3 | 115458 | Lelio R Paula | 03/2014 |
6056 | (22*10^115454+119)/3 | 115455 | Robert Price | 04/2021 |
6057 | 89^59221-88^59221 | 115445 | Robert Price | 06/2015 |
6058 | (7^136559-5^136559)/2 | 115406 | Jon Grantham | 08/2023 |
6059 | 2^383347+1869413 | 115399 | Enzo Doria | 05/2016 |
6060 | (103*10^115366+17)/3 | 115368 | Robert Price | 08/2020 |
6061 | (2^383232+750)/2 | 115365 | Stefano Morozzi | 09/2020 |
6062 | (2^383130-7)/131793 | 115329 | Lelio R Paula | 03/2014 |
6063 | (12^106859+1)/13 | 115320 | Paul Bourdelais | 02/2010 |
6064 | 29961^7060+7060^29961 | 115315 | Hans Havermann | 01/2021 |
6066 | 2^383039+1869509 | 115307 | Enzo Doria | 05/2016 |
6065 | 32918^3183+3183^32918 | 115307 | Hans Havermann | 01/2021 |
6067 | 36964^1315+1315^36964 | 115288 | Hans Havermann | 02/2021 |
6068 | (13*2^382968+1)/7 | 115286 | Lelio R Paula | 04/2014 |
6069 | (22*10^115282+29)/3 | 115283 | Robert Price | 02/2021 |
6070 | (2^382945+2046)/2 | 115278 | Stefano Morozzi | 09/2020 |
6071 | (2^382789+3182)/2 | 115231 | Stefano Morozzi | 09/2020 |
6072 | 30416^6141+6141^30416 | 115224 | Hans Havermann | 02/2021 |
6073 | 6*10^115211+79 | 115212 | Robert Price | 09/2020 |
6074 | (2^382722+3598)/2 | 115211 | Stefano Morozzi | 09/2020 |
6075 | 27987^13078+13078^27987 | 115210 | Hans Havermann | 02/2021 |
6076 | (2^382699+2090)/2 | 115204 | Stefano Morozzi | 09/2020 |
6077 | (22*10^115188-193)/9 | 115189 | Robert Price | 07/2022 |
6078 | 2^382633+73697 | 115185 | Enzo Doria | 04/2016 |
6079 | 2^382509-113593 | 115147 | Enzo Doria | 08/2014 |
6080 | 2^382502-2791721 | 115145 | Enzo Doria | 03/2016 |
6081 | (2^382495+1274)/2 | 115143 | Stefano Morozzi | 01/2021 |
6082 | 2^382464+22741 | 115134 | Enzo Doria | 09/2023 |
6083 | 26752^20065+20065^26752 | 115099 | Hans Havermann | 02/2021 |
6084 | 26383^23008+23008^26383 | 115080 | Hans Havermann | 02/2021 |
6085 | 9^120590-120590 | 115073 | Robert Price | 03/2014 |
6086 | 28203^12016+12016^28203 | 115062 | Hans Havermann | 02/2021 |
6087 | 2^382198+9 | 115054 | Lelio R Paula | 03/2013 |
6088 | 18268*31^77131+22839 | 115035 | Eric Chen | 05/2024 |
6089 | 30101^6630+6630^30101 | 115032 | Hans Havermann | 01/2021 |
6090 | (89*10^115030-179)/9 | 115031 | Robert Price | 12/2019 |
6091 | 25554^26089-26089^25554 | 114987 | Frank Doornink | 02/2024 |
6092 | 25142^26129-26129^25142 | 114979 | Frank Doornink | 12/2023 |
6093 | (2^381935+2774)/2 | 114974 | Stefano Morozzi | 02/2021 |
6094 | 27300^16271+16271^27300 | 114972 | Hans Havermann | 02/2021 |
6095 | (23*10^114962+7)/3 | 114963 | Robert Price | 05/2023 |
6096 | 2^381883-59197 | 114959 | Enzo Doria | 10/2015 |
6097 | 27423^15542+15542^27423 | 114944 | Hans Havermann | 02/2021 |
6098 | (2^381820+1626)/2 | 114939 | Stefano Morozzi | 09/2020 |
6100 | 2^381806-4481 | 114936 | Yves Minet | 07/2011 |
6099 | 2^381808-1851507 | 114936 | Enzo Doria | 08/2015 |
6101 | (2^381792+2502)/2 | 114931 | Stefano Morozzi | 09/2020 |
6102 | 2^381774-112373 | 114926 | Enzo Doria | 06/2014 |
6103 | 26341^22980+22980^26341 | 114883 | Hans Havermann | 01/2021 |
6104 | 2^381555-109051 | 114860 | Enzo Doria | 04/2014 |
6105 | 2^381551+213683 | 114859 | Enzo Doria | 09/2023 |
6106 | 2^381546-113501 | 114857 | Enzo Doria | 08/2014 |
6107 | (7*10^114845-19)/3 | 114846 | Robert Price | 10/2020 |
6108 | 26675^20178+20178^26675 | 114833 | Hans Havermann | 02/2021 |
6109 | (2^381436+1182)/2 | 114824 | Stefano Morozzi | 09/2020 |
6110 | 3^240644+16 | 114817 | Robert Price | 04/2020 |
6111 | 2^381360-110429 | 114801 | Enzo Doria | 05/2014 |
6112 | (17*10^114795+79)/3 | 114796 | Robert Price | 04/2019 |
6113 | (66^63079+1)/67 | 114774 | Paul Bourdelais | 09/2017 |
6114 | 2^381252-115079 | 114769 | Enzo Doria | 06/2015 |
6115 | (2^381251+3186)/2 | 114768 | Stefano Morozzi | 09/2020 |
6116 | 2^381209-29323 | 114756 | Enzo Doria | 07/2015 |
6117 | 2^381207-111546435 | 114755 | Paul Bourdelais | 10/2021 |
6118 | 569^41651-568^41651 | 114754 | Jean-Louis Charton | 11/2009 |
6119 | 2^381201+1873205 | 114753 | Enzo Doria | 06/2016 |
6121 | (85*10^114737+293)/9 | 114738 | Robert Price | 12/2019 |
6122 | (265*10^114736+17)/3 | 114738 | Robert Price | 03/2020 |
6120 | 379*10^114735+9 | 114738 | Jason Yuen | 01/2025 |
6123 | (2^381062+2170)/2 | 114711 | Stefano Morozzi | 09/2020 |
6124 | 2^380974-112991 | 114685 | Enzo Doria | 07/2014 |
6125 | 37097^1234+1234^37097 | 114679 | Hans Havermann | 02/2021 |
6126 | (26*10^114658-119)/3 | 114659 | Robert Price | 07/2023 |
6127 | 88^58949-87 | 114626 | Norbert Schneider | 11/2015 |
6128 | (2^380773+662)/2 | 114624 | Stefano Morozzi | 09/2020 |
6129 | Phi(155285,10)/242674820198201 | 114610 | Makoto Kamada | 02/2024 |
6130 | 29913^6782+6782^29913 | 114608 | Hans Havermann | 02/2021 |
6131 | (331*10^114605-7)/9 | 114607 | Robert Price | 04/2022 |
6132 | 2^380700+91 | 114603 | Lelio R Paula | 03/2013 |
6133 | (2^380632+2578)/2 | 114582 | Stefano Morozzi | 09/2020 |
6134 | 7*10^114577+27 | 114578 | Robert Price | 11/2020 |
6136 | 10^114575+3^114576 | 114576 | Mike Oakes | 09/2010 |
6135 | 10^114575+66561 | 114576 | Patrick De Geest | 02/2017 |
6137 | 10^114575-581081 | 114575 | Patrick De Geest | 02/2017 |
6138 | 2^380587-115315 | 114569 | Enzo Doria | 06/2015 |
6139 | 31874^3927+3927^31874 | 114558 | Hans Havermann | 02/2021 |
6140 | 2^380513-216925 | 114546 | Enzo Doria | 05/2014 |
6141 | 2^380451-1840087 | 114528 | Enzo Doria | 06/2015 |
6142 | (2^380426+1510)/2 | 114520 | Stefano Morozzi | 09/2020 |
6143 | (15*2^380388-1)/539 | 114507 | Lelio R Paula | 04/2014 |
6144 | 2^380279-461347 | 114476 | Enzo Doria | 07/2015 |
6145 | (331*10^114454-7)/9 | 114456 | Robert Price | 04/2022 |
6146 | 27121^16590+16590^27121 | 114447 | Hans Havermann | 01/2021 |
6147 | 25966^25555+25555^25966 | 114445 | Hans Havermann | 01/2021 |
6148 | (611*32^76029-53)/31 | 114437 | Eric Chen | 11/2023 |
6149 | (11*10^114400+529)/9 | 114401 | Robert Price | 09/2021 |
6150 | 2^380021+1871147 | 114398 | Enzo Doria | 05/2016 |
6151 | 2^380005+1869707 | 114393 | Enzo Doria | 05/2016 |
6152 | 2^379958-113297 | 114379 | Enzo Doria | 07/2014 |
6153 | (2^379897+1274)/2 | 114361 | Stefano Morozzi | 01/2021 |
6154 | 2^379881-109105 | 114356 | Enzo Doria | 04/2014 |
6155 | (21*2^379857-1)/13 | 114349 | Lelio R Paula | 03/2014 |
6156 | (4*10^114340+83)/3 | 114341 | Robert Price | 02/2018 |
6157 | (26*10^114317-77)/3 | 114318 | Robert Price | 11/2019 |
6158 | (4*10^114296+149)/9 | 114296 | Robert Price | 04/2018 |
6159 | 88^58773-87 | 114284 | Norbert Schneider | 11/2015 |
6160 | 27764^13065+13065^27764 | 114280 | Hans Havermann | 01/2021 |
6161 | (132^53891-1)/131 | 114278 | Anonymous | 06/2024 |
6162 | 2^379529-2790283 | 114250 | Enzo Doria | 03/2016 |
6163 | 2^379522+1869115 | 114248 | Enzo Doria | 05/2016 |
6164 | (145*10^114226-1)/9 | 114228 | Serge Batalov | 12/2014 |
6165 | 2^379317-115033 | 114186 | Enzo Doria | 06/2015 |
6166 | (22*10^114178+47)/3 | 114179 | Robert Price | 06/2021 |
6167 | (17*2^379246-1)/17407 | 114162 | Lelio R Paula | 03/2014 |
6168 | (2^379192+226)/2 | 114148 | Stefano Morozzi | 09/2020 |
6169 | (228^48407-1)/227 | 114139 | Alexander Zhirkov | 03/2023 |
6170 | 6*10^114091+23 | 114092 | Robert Price | 09/2020 |
6171 | (4*10^114076+143)/3 | 114077 | Robert Price | 03/2018 |
6172 | 332*25^81584+12357 | 114053 | Eric Chen | 10/2023 |
6173 | (2^378820+3226)/2 | 114036 | Stefano Morozzi | 01/2021 |
6174 | (2^378754+2058)/2 | 114017 | Stefano Morozzi | 09/2020 |
6175 | 13643^27572-27572^13643 | 114008 | Norbert Schneider | 12/2022 |
6177 | (46*10^113969+683)/9 | 113970 | Robert Price | 03/2019 |
6176 | (83*10^113969+133)/9 | 113970 | Robert Price | 08/2021 |
6178 | 32226^3439+3439^32226 | 113966 | Hans Havermann | 02/2021 |
6179 | (77*10^113963-149)/9 | 113964 | Robert Price | 03/2022 |
6180 | 78*10^113954-7 | 113956 | Robert Price | 10/2020 |
6181 | 2*10^113941+9 | 113942 | Dmitry Domanov | 11/2010 |
6182 | 10^113933+145897 | 113934 | Patrick De Geest | 02/2021 |
6185 | (2^378478+1642)/2 | 113933 | Stefano Morozzi | 09/2020 |
6183 | 10^113933-8000000001 | 113933 | Robert Price | 11/2020 |
6184 | 10^113933-66167 | 113933 | Patrick De Geest | 02/2021 |
6186 | 2339662057597*10^113903+9 | 113916 | Robert Price | 03/2021 |
6187 | 4*10^113905+91 | 113906 | Robert Price | 08/2018 |
6188 | 10^113894+76609 | 113895 | Patrick De Geest | 02/2021 |
6190 | 10^113894-10000001 | 113894 | Robert Price | 09/2020 |
6189 | 10^113894-373947 | 113894 | Patrick De Geest | 02/2021 |
6191 | 33933^2270+2270^33933 | 113881 | Hans Havermann | 02/2021 |
6192 | 4*10^113874-21 | 113875 | Robert Price | 09/2018 |
6193 | 2^378272-16565 | 113872 | Enzo Doria | 04/2013 |
6194 | 2^378217-109075 | 113855 | Enzo Doria | 04/2014 |
6195 | 2^378198+67 | 113849 | Lelio R Paula | 03/2013 |
6196 | 2^378173-3249 | 113842 | Yves Minet | 12/2014 |
6197 | (2^378155-5)/6597 | 113833 | Lelio R Paula | 03/2014 |
6198 | 2^378137+1334025 | 113831 | Henri Lifchitz | 10/2024 |
6199 | 92941#+(355049#)/(92941#) | 113830 | Makoto Morimoto | 10/2017 |
6200 | 30030^6173+6173^30030 | 113829 | Hans Havermann | 01/2021 |
6201 | 2^378128-262977 | 113828 | Enzo Doria | 05/2014 |
6202 | 2^378123-113215 | 113827 | Enzo Doria | 07/2014 |
6203 | 6^146274-18893 | 113824 | Enzo Doria | 03/2013 |
6204 | 34596^1949+1949^34596 | 113815 | Hans Havermann | 02/2021 |
6205 | 2^378078+75 | 113813 | Lelio R Paula | 03/2013 |
6206 | (28*10^113810+449)/9 | 113811 | Robert Price | 11/2021 |
6207 | 26273^21448+21448^26273 | 113799 | Hans Havermann | 02/2021 |
6208 | 2^377966+255255 | 113780 | Paul Bourdelais | 10/2021 |
6209 | 2^377940+63 | 113772 | Lelio R Paula | 03/2013 |
6210 | 2^377941-2785843 | 113772 | Enzo Doria | 04/2016 |
6211 | (7*10^113757+11)/9 | 113757 | Tyler Busby | 01/2023 |
6212 | 2^377810+1875109 | 113733 | Enzo Doria | 09/2016 |
6213 | 2^377803-1838635 | 113731 | Enzo Doria | 05/2015 |
6214 | 2^377799+52223 | 113729 | Yves Minet | 08/2010 |
6215 | (2^377791+3258)/2 | 113727 | Stefano Morozzi | 02/2021 |
6216 | 11^109190-270 | 113710 | Enzo Doria | 12/2012 |
6217 | 28206^10739+10739^28206 | 113698 | Hans Havermann | 01/2021 |
6218 | 7*10^113693+9 | 113694 | Robert Price | 09/2015 |
6219 | 13899^27442+27442^13899 | 113692 | Norbert Schneider | 12/2020 |
6220 | (82*10^113681+161)/9 | 113682 | Robert Price | 10/2019 |
6221 | 26121^22478+22478^26121 | 113673 | Hans Havermann | 01/2021 |
6222 | 4*10^113658+49 | 113659 | Robert Price | 01/2019 |
6223 | (10^113656+7)/40231/6439001 | 113645 | Alfred Reich | 06/2021 |
6224 | (2*10^113631+529)/9 | 113631 | Robert Price | 01/2018 |
6225 | 2^377408-2798279 | 113612 | Enzo Doria | 04/2016 |
6226 | (292^46336+1)/(292^256+1) | 113605 | Martin Hopf | 12/2023 |
6227 | 13706^27459+27459^13706 | 113596 | Norbert Schneider | 12/2020 |
6228 | 5*10^113586+57 | 113587 | Robert Price | 12/2018 |
6229 | (2^377242+2794)/2 | 113561 | Stefano Morozzi | 02/2021 |
6230 | 2^377222+93679 | 113556 | Yves Minet | 02/2011 |
6232 | 262147#+316847 | 113552 | Makoto Morimoto | 02/2016 |
6231 | 27172^15101+15101^27172 | 113552 | Hans Havermann | 01/2021 |
6233 | (2^377131+2018)/2 | 113528 | Stefano Morozzi | 09/2020 |
6234 | 2^377026-458903 | 113497 | Enzo Doria | 04/2015 |
6235 | (2^377014+2202)/2 | 113493 | Stefano Morozzi | 09/2020 |
6236 | 34791^1828+1828^34791 | 113488 | Hans Havermann | 02/2021 |
6237 | (2^376967+258)/2 | 113479 | Stefano Morozzi | 09/2020 |
6238 | (29*10^113468-17)/3 | 113469 | Robert Price | 09/2019 |
6239 | 35^73477-34^73477 | 113454 | Robert Price | 05/2012 |
6240 | (14*10^113451-89)/3 | 113452 | Robert Price | 05/2020 |
6241 | 2^376790+27 | 113426 | Lelio R Paula | 03/2013 |
6242 | 2^376786-112701 | 113424 | Enzo Doria | 06/2014 |
6243 | 2^376731+21 | 113408 | Lelio R Paula | 03/2013 |
6244 | 9*10^113394-73 | 113395 | Robert Price | 01/2021 |
6245 | 29660^6651+6651^29660 | 113387 | Hans Havermann | 01/2021 |
6247 | 2^376634+1871245 | 113379 | Enzo Doria | 05/2016 |
6246 | (4^188318+17)/3 | 113379 | Robert Price | 02/2017 |
6248 | E(29532)/492842728006750534663978950979381235 | 113367 | Thomas Ritschel | 01/2021 |
6249 | 2^376576-344369 | 113361 | Enzo Doria | 07/2015 |
6250 | 2^376549-4543 | 113353 | Yves Minet | 03/2019 |