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 ? |
9001 | 10^98288+3 | 98289 | Robert Price | 03/2011 |
9002 | 10^98288-117017 | 98288 | Patrick De Geest | 11/2011 |
9003 | (44*10^98284-719)/9 | 98285 | Robert Price | 12/2017 |
9004 | (5985^26021-1)/5984 | 98280 | Serge Batalov | 06/2022 |
9005 | 23466^15419+15419^23466 | 98277 | Hans Havermann | 02/2020 |
9006 | 2^326421-2797573 | 98263 | Enzo Doria | 04/2016 |
9007 | 2^326401+16095 | 98257 | Lelio R Paula | 07/2016 |
9008 | (6494^25771-1)/6493 | 98249 | Serge Batalov | 06/2022 |
9009 | 7^116240-116240^7 | 98235 | Norbert Schneider | 05/2017 |
9010 | 17^79826-78 | 98222 | Lelio R Paula | 08/2016 |
9011 | 2^326268-809 | 98217 | Yves Minet | 04/2011 |
9012 | 22659^21590+21590^22659 | 98210 | Hans Havermann | 10/2019 |
9013 | 22268^22587-22587^22268 | 98202 | Norbert Schneider | 08/2020 |
9014 | (418*10^98199+23)/9 | 98201 | Robert Price | 08/2017 |
9015 | 12*10^98198-7 | 98200 | Robert Price | 11/2017 |
9016 | 15^83496-76 | 98199 | Lelio R Paula | 08/2016 |
9017 | (10223*2^326179+1)/6125 | 98190 | Lelio R Paula | 07/2014 |
9018 | 9*5^140471-4 | 98186 | Lelio R Paula | 11/2014 |
9019 | (35103^21601-1)/35102 | 98180 | Serge Batalov | 06/2022 |
9021 | 22774^20455+20455^22774 | 98175 | Hans Havermann | 07/2020 |
9020 | (4516^26863-1)/4515 | 98175 | Serge Batalov | 06/2022 |
9022 | 2^326069-2383 | 98157 | Yves Minet | 10/2013 |
9023 | (9661^24631-1)/9660 | 98152 | Serge Batalov | 06/2022 |
9024 | (4175^27109-1)/4174 | 98149 | Serge Batalov | 06/2022 |
9025 | (57801^20611-1)/57800 | 98144 | Serge Batalov | 06/2022 |
9026 | 2^325973+1185 | 98128 | Lelio R Paula | 07/2016 |
9027 | (25*2^325949-1)/17 | 98121 | Lelio R Paula | 02/2014 |
9028 | 2^325945-1847269 | 98120 | Enzo Doria | 07/2015 |
9029 | 8*10^98111-67 | 98112 | Robert Price | 10/2017 |
9030 | (2^325902+1138)/2 | 98106 | Stefano Morozzi | 09/2020 |
9031 | (215^42061-1)/214 | 98103 | Serge Batalov | 06/2022 |
9032 | (6775^25609-1)/6774 | 98102 | Serge Batalov | 06/2022 |
9033 | (6718^25633-1)/6717 | 98100 | Serge Batalov | 06/2022 |
9034 | 2^325866+15 | 98096 | Lelio R Paula | 12/2012 |
9035 | 22591^21952+21952^22591 | 98079 | Hans Havermann | 02/2020 |
9036 | 2^325765+1974305 | 98066 | Enzo Doria | 06/2016 |
9037 | 2^325733-58695 | 98056 | Lelio R Paula | 07/2016 |
9038 | (7*10^98055-529)/9 | 98055 | Robert Price | 08/2021 |
9039 | 2^325717-3645 | 98051 | Lelio R Paula | 07/2016 |
9040 | (2^325704+718)/2 | 98047 | Stefano Morozzi | 09/2020 |
9041 | (15679^23371-1)/15678 | 98045 | Serge Batalov | 06/2022 |
9042 | (23342^22441-1)/23341 | 98022 | Serge Batalov | 06/2022 |
9043 | 23968^12293+12293^23968 | 98021 | Hans Havermann | 11/2019 |
9044 | (23*2^325583-1)/21 | 98011 | Lelio R Paula | 02/2014 |
9045 | (7*10^98007-13)/3 | 98008 | Robert Price | 06/2016 |
9046 | (2^325544+1110)/2 | 97999 | Stefano Morozzi | 09/2020 |
9047 | 2^325512-459959 | 97989 | Enzo Doria | 05/2015 |
9048 | (2^325492+682)/2 | 97983 | Stefano Morozzi | 09/2020 |
9049 | (3^205354-8)/17 | 97978 | Lelio R Paula | 09/2013 |
9050 | 2^325433+76817 | 97966 | Enzo Doria | 05/2016 |
9051 | 5*10^97963+81 | 97964 | Robert Price | 08/2017 |
9052 | (13208^23773-1)/13207 | 97961 | Serge Batalov | 06/2022 |
9053 | 2^325390-109061 | 97953 | Enzo Doria | 04/2014 |
9054 | (55*10^97940+323)/9 | 97941 | Robert Price | 10/2021 |
9055 | 13^87921+24 | 97940 | Lelio R Paula | 08/2016 |
9056 | 10^97930+188277 | 97931 | Patrick De Geest | 09/2022 |
9058 | 10^97930-7000001 | 97930 | Robert Price | 06/2021 |
9057 | 10^97930-66951 | 97930 | Patrick De Geest | 09/2022 |
9059 | 961^32831-960^32831 | 97926 | Jean-Louis Charton | 02/2011 |
9060 | (17968^23017-1)/17967 | 97922 | Serge Batalov | 06/2022 |
9061 | (3337^27793-1)/3336 | 97922 | Serge Batalov | 06/2022 |
9063 | 22600^21499+21499^22600 | 97913 | Hans Havermann | 05/2020 |
9062 | (18703^22921-1)/18702 | 97913 | Serge Batalov | 06/2022 |
9064 | 2^325215+12909 | 97900 | Lelio R Paula | 07/2016 |
9065 | 22619^21286+21286^22619 | 97898 | Hans Havermann | 04/2020 |
9066 | (85*10^97876-49)/9 | 97877 | Robert Price | 12/2020 |
9067 | 7*10^97874-69 | 97875 | Robert Price | 01/2017 |
9068 | 5*10^97869-63 | 97870 | Robert Price | 04/2021 |
9069 | (643*32^65022-23)/31 | 97870 | Eric Chen | 04/2023 |
9071 | (17^79537+5^79537)/22 | 97865 | Robert Price | 06/2013 |
9070 | 15^83212+22 | 97865 | Lelio R Paula | 08/2016 |
9072 | 2^325087-109057 | 97861 | Enzo Doria | 04/2014 |
9073 | 2^325074+1870657 | 97858 | Enzo Doria | 05/2016 |
9075 | 2^325066-2111 | 97855 | Yves Minet | 08/2013 |
9074 | CopelandErdos(97855) | 97855 | Eric W. Weisstein | 10/2015 |
9076 | (8694^24841-1)/8693 | 97851 | Serge Batalov | 06/2022 |
9077 | (21159^22621-1)/21158 | 97843 | Serge Batalov | 06/2022 |
9078 | 26660^4677+4677^26660 | 97842 | Hans Havermann | 12/2019 |
9079 | 18^77944-89 | 97841 | Lelio R Paula | 07/2016 |
9080 | 119^47136+118 | 97833 | Norbert Schneider | 09/2018 |
9081 | 6^125720-17663 | 97830 | Enzo Doria | 02/2013 |
9082 | (73640^20101-1)/73639 | 97829 | Serge Batalov | 06/2022 |
9083 | 2^324972-2069 | 97827 | Yves Minet | 05/2013 |
9084 | 2^324958-4691 | 97823 | Yves Minet | 05/2019 |
9085 | (8087^25033-1)/8086 | 97820 | Serge Batalov | 06/2022 |
9086 | 2^324944-2788319 | 97818 | Enzo Doria | 03/2016 |
9087 | 22845^19112+19112^22845 | 97807 | Hans Havermann | 10/2019 |
9088 | (2^324898+1270)/2 | 97804 | Stefano Morozzi | 09/2020 |
9090 | 4*10^97799-9 | 97800 | Erik Branger | 11/2013 |
9089 | 2^324882+577294575 | 97800 | Lelio R Paula | 09/2016 |
9091 | 2^324863-1867921 | 97794 | Enzo Doria | 04/2016 |
9092 | 6^125662-18473 | 97785 | Enzo Doria | 03/2013 |
9093 | 12^90604+11 | 97779 | Lelio R Paula | 07/2016 |
9094 | (29*10^97751+49)/3 | 97752 | Robert Price | 09/2021 |
9095 | (37108^21391-1)/37107 | 97741 | Serge Batalov | 06/2022 |
9096 | 5^139830+24 | 97737 | Lelio R Paula | 04/2016 |
9097 | (2^324672+1198)/2 | 97736 | Stefano Morozzi | 09/2020 |
9098 | (101*10^97724+7)/9 | 97726 | Robert Price | 02/2022 |
9099 | 2^324612+1155 | 97718 | Lelio R Paula | 07/2016 |
9100 | (2^324597+3542)/2 | 97714 | Stefano Morozzi | 09/2020 |
9101 | 19^76404-44 | 97702 | Lelio R Paula | 07/2016 |
9102 | (5939^25889-1)/5938 | 97694 | Serge Batalov | 06/2022 |
9104 | 2^324505-2983 | 97686 | Yves Minet | 04/2011 |
9103 | (7740^25121-1)/7739 | 97686 | Serge Batalov | 06/2022 |
9105 | (144^45259+1)/145 | 97684 | Paul Bourdelais | 08/2019 |
9106 | (31*2^324496-1)/45 | 97683 | Lelio R Paula | 02/2014 |
9107 | (11234^24109-1)/11233 | 97651 | Serge Batalov | 06/2022 |
9108 | 6^125488-17843 | 97649 | Enzo Doria | 02/2013 |
9109 | (2^324350+3198)/2 | 97639 | Stefano Morozzi | 09/2020 |
9110 | (75638^20011-1)/75637 | 97624 | Serge Batalov | 06/2022 |
9111 | 7^115515-2 | 97622 | Lelio R Paula | 09/2013 |
9112 | (15672^23269-1)/15671 | 97613 | Serge Batalov | 06/2022 |
9113 | (89^50069-1)/88 | 97603 | Paul Bourdelais | 08/2017 |
9114 | 6^125418-5 | 97595 | Lelio R Paula | 11/2014 |
9115 | (2^324193+3522)/2 | 97592 | Stefano Morozzi | 09/2020 |
9116 | (2422^28837-1)/2421 | 97587 | Serge Batalov | 06/2022 |
9117 | (2^324172+666)/2 | 97586 | Stefano Morozzi | 09/2020 |
9118 | 2^324091+111546435 | 97562 | Paul Bourdelais | 10/2021 |
9119 | 2^324076+1155 | 97557 | Lelio R Paula | 07/2016 |
9120 | (2^324074+9)/13 | 97555 | Lelio R Paula | 10/2013 |
9121 | (11*10^97539-71)/3 | 97540 | Robert Price | 04/2022 |
9122 | (55459*2^323993+1)/21 | 97536 | Lelio R Paula | 07/2014 |
9123 | 13^87557-12^87557 | 97534 | Jean-Louis Charton | 12/2008 |
9124 | 2^323946+73939 | 97518 | Enzo Doria | 04/2016 |
9125 | 2^323937+1866947 | 97515 | Enzo Doria | 03/2016 |
9126 | (98339^19531-1)/98338 | 97508 | Serge Batalov | 06/2022 |
9128 | 6^125290-18533 | 97495 | Enzo Doria | 03/2013 |
9127 | (2^323870+1650)/2 | 97495 | Stefano Morozzi | 09/2020 |
9129 | 2^323845+101 | 97488 | Lelio R Paula | 12/2012 |
9130 | 18^77662+65 | 97487 | Lelio R Paula | 07/2016 |
9131 | 22634^20265+20265^22634 | 97479 | Hans Havermann | 04/2020 |
9132 | (5533^26041-1)/5532 | 97467 | Serge Batalov | 06/2022 |
9133 | 2^323772+76771 | 97466 | Enzo Doria | 05/2016 |
9134 | 2^323765-112213 | 97463 | Enzo Doria | 06/2014 |
9135 | 22730^19389+19389^22730 | 97457 | Hans Havermann | 02/2020 |
9136 | 2^323720-6555 | 97450 | Lelio R Paula | 07/2016 |
9137 | 2^323694-1860401 | 97442 | Enzo Doria | 03/2016 |
9138 | 20^74886+3 | 97429 | Lelio R Paula | 06/2016 |
9139 | 24476^9561+9561^24476 | 97427 | Hans Havermann | 01/2020 |
9140 | (2^323623+1766)/2 | 97420 | Stefano Morozzi | 09/2020 |
9141 | (3250^27739-1)/3249 | 97413 | Serge Batalov | 06/2022 |
9143 | 3*10^97399+73 | 97400 | Robert Price | 04/2016 |
9142 | 7^115252-50 | 97400 | Lelio R Paula | 07/2016 |
9144 | (4715^26513-1)/4714 | 97392 | Serge Batalov | 06/2022 |
9145 | 2^323521+213317 | 97390 | Enzo Doria | 09/2023 |
9146 | 224737#+393581 | 97389 | Nicolas PALAU | 12/2016 |
9147 | (2^323468+3186)/2 | 97374 | Stefano Morozzi | 09/2020 |
9148 | (2^323456+538)/2 | 97370 | Stefano Morozzi | 09/2020 |
9149 | 23277^15236+15236^23277 | 97365 | Hans Havermann | 07/2020 |
9151 | (26*10^97353+31)/3 | 97354 | Robert Price | 07/2016 |
9150 | (2^323403+3510)/2 | 97354 | Stefano Morozzi | 09/2020 |
9152 | 23756^12519+12519^23756 | 97342 | Hans Havermann | 07/2020 |
9153 | 10^97335+271641 | 97336 | Patrick De Geest | 09/2022 |
9155 | 10^97335-4000001 | 97335 | Robert Price | 07/2021 |
9154 | 10^97335-98193 | 97335 | Patrick De Geest | 09/2022 |
9156 | (637*10^97331+11)/9 | 97333 | Robert Price | 10/2021 |
9157 | 23991^11402+11402^23991 | 97332 | Hans Havermann | 07/2020 |
9158 | 61^54517-60^54517 | 97331 | Jean-Louis Charton | 09/2005 |
9159 | (38*10^97329+187)/9 | 97330 | Robert Price | 11/2017 |
9160 | (31147^21661-1)/31146 | 97328 | Serge Batalov | 06/2022 |
9161 | 86455!4+8 | 97319 | Robert Price | 09/2019 |
9162 | 22591^20310+20310^22591 | 97316 | Hans Havermann | 06/2020 |
9163 | 2^323261-431173 | 97312 | Harrison Mesh | 06/2022 |
9164 | (3996^27017-1)/3995 | 97302 | Serge Batalov | 06/2022 |
9165 | 25101^7520+7520^25101 | 97297 | Hans Havermann | 05/2020 |
9166 | (233*10^97294+7)/3 | 97296 | Robert Price | 03/2022 |
9167 | p(19982)#/2-1024 | 97293 | Robert Price | 09/2017 |
9168 | (65*10^97288+277)/9 | 97289 | Robert Price | 08/2021 |
9169 | 6^125021-85 | 97286 | Lelio R Paula | 08/2016 |
9170 | 2^323164-47355 | 97283 | Lelio R Paula | 07/2016 |
9171 | (3^203902+4)/36051015157 | 97276 | Lelio R Paula | 09/2013 |
9172 | 2^323054-6555 | 97249 | Lelio R Paula | 07/2016 |
9173 | 22822^18247+18247^22822 | 97249 | Hans Havermann | 02/2020 |
9174 | 9*10^97247-29 | 97248 | Robert Price | 05/2017 |
9175 | 24382^9735+9735^24382 | 97244 | Hans Havermann | 02/2020 |
9176 | (31*10^97242+41)/9 | 97243 | Robert Price | 04/2015 |
9177 | GoldenRatioPrime[97241] | 97241 | Eric W. Weisstein | 06/2009 |
9178 | 12^90098-41 | 97233 | Lelio R Paula | 07/2016 |
9179 | 2^322928-216929 | 97212 | Enzo Doria | 05/2014 |
9180 | (16731^23017-1)/16730 | 97209 | Serge Batalov | 06/2022 |
9181 | 3*10^97205-61 | 97206 | Robert Price | 04/2021 |
9182 | (7*2^322896-1)/57 | 97201 | Lelio R Paula | 02/2014 |
9183 | (35*10^97194-341)/9 | 97195 | Robert Price | 08/2021 |
9184 | (4872^26357-1)/4871 | 97194 | Serge Batalov | 06/2022 |
9185 | (2^322897+5)/3146107489 | 97193 | Lelio R Paula | 10/2013 |
9186 | (796*10^97183-31)/9 | 97185 | Robert Price | 07/2022 |
9187 | (2^322789+2214)/2 | 97169 | Stefano Morozzi | 09/2020 |
9188 | 2^322725+75761 | 97150 | Enzo Doria | 04/2016 |
9189 | (13*2^322686+1)/119 | 97138 | Lelio R Paula | 11/2013 |
9190 | (2175^29101-1)/2174 | 97121 | Serge Batalov | 06/2022 |
9191 | 22402^21639+21639^22402 | 97118 | Hans Havermann | 07/2020 |
9192 | 23399^14128+14128^23399 | 97108 | Hans Havermann | 06/2020 |
9193 | (2892^28057-1)/2891 | 97108 | Serge Batalov | 06/2022 |
9194 | (9578^24391-1)/9577 | 97104 | Serge Batalov | 06/2022 |
9195 | (2^322525+2606)/2 | 97090 | Stefano Morozzi | 09/2020 |
9196 | (9563^24391-1)/9562 | 97087 | Serge Batalov | 06/2022 |
9197 | (41*10^97085+373)/9 | 97086 | Robert Price | 04/2017 |
9198 | (2^322473+854)/2 | 97074 | Stefano Morozzi | 02/2021 |
9199 | 2^322413+77 | 97056 | Lelio R Paula | 12/2012 |
9200 | 2^322406+177 | 97054 | Lelio R Paula | 12/2012 |
9201 | (349^38167-1)/348 | 97050 | Serge Batalov | 06/2022 |
9202 | (14*10^97044+31)/9 | 97045 | Robert Price | 02/2015 |
9203 | 2^322302+255255 | 97023 | Lelio R Paula | 07/2016 |
9204 | 2^322286+212659 | 97018 | Enzo Doria | 09/2023 |
9205 | (1302^31147-1)/1301 | 97008 | Serge Batalov | 06/2022 |
9206 | 2^322196-113093 | 96991 | Enzo Doria | 07/2014 |
9207 | (2^322169+2690)/2 | 96983 | Stefano Morozzi | 09/2020 |
9208 | (49*10^96980+221)/9 | 96981 | Robert Price | 02/2022 |
9209 | 9*10^96968-47 | 96969 | Robert Price | 11/2021 |
9210 | (5895^25717-1)/5894 | 96962 | Serge Batalov | 06/2022 |
9211 | (27473^21841-1)/27472 | 96946 | Serge Batalov | 06/2022 |
9212 | 23109^15668+15668^23109 | 96943 | Hans Havermann | 07/2020 |
9213 | 2^322000-1861469 | 96932 | Enzo Doria | 03/2016 |
9214 | 2^321971-112747 | 96923 | Enzo Doria | 06/2014 |
9215 | 23754^12023+12023^23754 | 96917 | Hans Havermann | 07/2020 |
9216 | 11^93062-92 | 96915 | Lelio R Paula | 06/2016 |
9217 | (37871^21169-1)/37870 | 96914 | Serge Batalov | 06/2022 |
9218 | (2^321922+2214)/2 | 96908 | Stefano Morozzi | 09/2020 |
9219 | (2^321900+2086)/2 | 96902 | Stefano Morozzi | 09/2020 |
9220 | (11*2^321841-7)/15 | 96884 | Renaud Lifchitz | 03/2011 |
9221 | 3^203051+34 | 96880 | Lelio R Paula | 05/2016 |
9222 | 2*10^96867-51 | 96868 | Robert Price | 11/2017 |
9223 | (2^321779+2618)/2 | 96865 | Stefano Morozzi | 09/2020 |
9224 | (64*10^96863-1)/27 | 96864 | Serge Batalov | 05/2010 |
9225 | 2^321716-2786939 | 96847 | Enzo Doria | 03/2016 |
9226 | 22496^20181+20181^22496 | 96844 | Hans Havermann | 03/2020 |
9227 | 2^321701-113053 | 96842 | Enzo Doria | 07/2014 |
9228 | 2^321700-28635 | 96842 | Lelio R Paula | 06/2016 |
9229 | (5*2^321691-1)/27 | 96838 | Lelio R Paula | 02/2014 |
9230 | 6*10^96835+13 | 96836 | Robert Price | 10/2021 |
9231 | 6^124433-124433 | 96828 | Robert Price | 01/2014 |
9232 | 2^321631+69 | 96821 | Lelio R Paula | 12/2012 |
9233 | (27109^21841-1)/27108 | 96820 | Serge Batalov | 06/2022 |
9234 | (13*2^321606+1)/119 | 96813 | Lelio R Paula | 11/2013 |
9235 | (5052^26141-1)/5051 | 96809 | Serge Batalov | 06/2022 |
9236 | (46*10^96798-1)/9 | 96799 | Serge Batalov | 10/2014 |
9237 | (59*10^96798+31)/9 | 96799 | Robert Price | 09/2015 |
9238 | (2^321536+2062)/2 | 96792 | Stefano Morozzi | 09/2020 |
9239 | 223319#+231223 | 96790 | Makoto Morimoto | 02/2016 |
9240 | 2^321519-28635 | 96787 | Lelio R Paula | 06/2016 |
9241 | 2^321487-1867237 | 96778 | Enzo Doria | 03/2016 |
9242 | 2^321461-63 | 96770 | Lelio R Paula | 12/2012 |
9243 | (16053^23011-1)/16052 | 96770 | Serge Batalov | 06/2022 |
9244 | 2^321439+123 | 96763 | Lelio R Paula | 12/2012 |
9245 | 2^321434+709 | 96762 | Lelio R Paula | 02/2013 |
9246 | 2^321419+22703 | 96757 | Enzo Doria | 09/2023 |
9247 | (2^321415+554)/2 | 96756 | Stefano Morozzi | 09/2020 |
9248 | 14^84413+89 | 96749 | Lelio R Paula | 07/2016 |
9249 | (28*10^96743+71)/9 | 96744 | Serge Batalov | 12/2008 |
9250 | 13^86847+96 | 96743 | Lelio R Paula | 06/2016 |