PRP Records

Probable Primes Top 10000

(301678 PRPs in the top)


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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1-250   251-500   501-750   751-1000   1001-1250   1251-1500   1501-1750   1751-2000   
2001-2250   2251-2500   2501-2750   2751-3000   3001-3250   3251-3500   3501-3750   3751-4000   
4001-4250   4251-4500   4501-4750   4751-5000   5001-5250   5251-5500   5501-5750   5751-6000   
6001-6250   6251-6500   6501-6750   6751-7000   7001-7250   7251-7500   7501-7750   7751-8000   
8001-8250   8251-8500   8501-8750   8751-9000   9001-9250   9251-9500   9501-9750   9751-10000   


Rank Probable prime Digits (> 50000) Who ? When ?
7512^1349535+218783406251Enzo Doria03/2024
752(55766^85849-1)/(55766^293-1)406081Ryan Propper11/2023
7532^1348956+24241406077Enzo Doria11/2023
754(88^208739+1)/89405888Paul Bourdelais12/2020
755(2^1347781-2^673891+1)/5405722Borys Jaworski10/2008
7562^1347744-3405712Paul Bourdelais07/2019
7572^1347546+39133405652Enzo Doria12/2024
7582^1346431+691203405317Boyan Hu09/2024
75982358^82358+2025^2025404848Henri Lifchitz01/2025
7609*10^404644-11404645Mischa Rodermond04/2023
7611215^131072+242^131072404302Kellen Shenton08/2022
7622^1341908+212911403955Enzo Doria09/2023
7632^1341625+226187403870Enzo Doria09/2024
7642^1340284+43801403466Enzo Doria04/2025
7651196^131072+595^131072403405Kellen Shenton08/2022
7662^1339302+29389403171Enzo Doria04/2024
7672^1335130+31669401915Enzo Doria07/2024
7682^1330791+46763400609Enzo Doria06/2025
7692^1330712+45631400585Enzo Doria05/2025
7702^1330388+38527400487Enzo Doria11/2024
7712^1330371+28313400482Enzo Doria03/2024
77210^400310+9400311Boyan Hu06/2025
77310^400000+1415223400001Patrick De Geest10/2020
77410^400000-339233400000Patrick De Geest10/2020
7752^1327766+48019399698Enzo Doria06/2025
7762^1323373+27317398375Enzo Doria01/2024
777Tau(863^24630)397727Nik Lygeros / Olivier Rozier01/2016
7782^1320423+24293397487Enzo Doria11/2023
7792^1320057+211517397377Enzo Doria08/2023
7802^1319770+1884949397291Enzo Doria06/2017
7812^1319616+30091397244Enzo Doria04/2024
7822^1317657+31367396655Enzo Doria04/2024
7832^1316848+43021396411Enzo Doria02/2025
7842^1316687+45983396363Enzo Doria05/2025
7852^1315753+226187396082Enzo Doria09/2024
7862^1314741+219257395777Enzo Doria03/2024
7872^1313062+1888849395272Enzo Doria08/2017
788(1073516^81920+1)/(1073516^16384+1)395236Serge Batalov01/2017
7892^1312349+221177395057Enzo Doria04/2024
790(1059995^81920+1)/(1059995^16384+1)394875Serge Batalov01/2017
7912^1311618+783529394837Enzo Doria01/2017
7922^1310192+232531394408Enzo Doria03/2025
7932^1308992+28111394046Enzo Doria02/2024
7942^1308000+1883521393748Enzo Doria02/2017
7952^1307563+232133393616Enzo Doria03/2025
7962^1307324+224611393544Enzo Doria07/2024
7972^1307262+28759393526Enzo Doria02/2024
798(1009565^81920+1)/(1009565^16384+1)393487Serge Batalov01/2017
7992^1305860+35461393104Enzo Doria08/2024
800(995042^81920+1)/(995042^16384+1)393075Serge Batalov01/2017
8012^1305333+47717392945Enzo Doria06/2025
802(988945^81920+1)/(988945^16384+1)392900Serge Batalov01/2017
803(988823^81920+1)/(988823^16384+1)392897Serge Batalov01/2017
804(2^1304983-1)/52199321392832Tony Prest / Never Odd Or Even03/2014
805(978970^81920+1)/(978970^16384+1)392612Serge Batalov01/2017
8062^1303816+38251392488Enzo Doria11/2024
8072^1303102+1866409392273Enzo Doria09/2017
8082^1302818+283429392188Enzo Doria01/2017
8092^1301430+22669391770Enzo Doria10/2023
8102^1301229+222467391709Enzo Doria04/2024
8112^1300835+232523391591Enzo Doria03/2025
812(934422^81920+1)/(934422^16384+1)391286Serge Batalov01/2017
8132^1299181+1886867391093Enzo Doria04/2017
814(37^249341-1)/36391016Paul Bourdelais08/2020
8152^1298304+1882891390829Enzo Doria01/2017
8162^1297732+228721390657Enzo Doria11/2024
81795196^12497+12497^95196390000Hans Havermann12/2021
8182^1295539+35633389997Enzo Doria08/2024
81986206^33381+33381^86206389953Hans Havermann05/2023
8202^1294976+236731389827Enzo Doria06/2025
8212^1294324+25171389631Enzo Doria12/2023
822(874207^81920+1)/(874207^16384+1)389390Serge Batalov01/2017
8232^1292338+229249389033Enzo Doria11/2024
8242^1289624+32551388216Enzo Doria05/2024
8252^1286857+37967387383Enzo Doria10/2024
8262^1285458+46159386962Enzo Doria06/2025
8272^1285456+230611386961Enzo Doria01/2025
828(7^457871-5^457871)/2386946Jon Grantham08/2023
82979455^73828+73828^79455386805Hans Havermann03/2023
83081650^54369+54369^81650386642Yusuf AttarBashi06/2021
83180565^62824+62824^80565386561Hans Havermann08/2021
83283747^41272+41272^83747386548Hans Havermann08/2021
83315^328574+328574^15386434Serge Batalov05/2014
8342^1282676+30493386124Enzo Doria12/2024
8352^1280078+1885099385342Enzo Doria08/2017
8362^1279921+17385295Stefano Morozzi10/2022
8372^1279245+224087385092Enzo Doria07/2024
8382^1277980+231391384711Enzo Doria01/2025
8392^1277688+231241384623Enzo Doria01/2025
8402^1277142+234979384459Enzo Doria04/2025
8412^1276977+71657384409Enzo Doria08/2023
842(76803^78961-1)/(76803^281-1)384382Ryan Propper11/2023
8432^1276571+26213384287Enzo Doria12/2023
844MillsLike(2,1,4,12,4,22,12,114,4,138,142,2956,6388,5248,17532,96930,83782,1464,897448,300832,26908)384166Sergey Batalov05/2024
8452^1274941+1880717383796Enzo Doria10/2016
8462^1272632+383431383101Enzo Doria01/2017
8472^1271346+1889839382714Enzo Doria08/2017
8482^1271173+219587382662Enzo Doria03/2024
8495*3^798534-2^798534380999Jon Grantham08/2023
850(10^380976-7)/3380976Leonid Durman01/2012
8512^1264748+23221380728Enzo Doria11/2023
852(4*10^380056+11)/3380057Tyler Busby03/2023
8532^1262431+228353380030Enzo Doria11/2024
8542^1260859+222683379557Enzo Doria06/2024
8552^1258313+43727378790Enzo Doria03/2025
8562^1257787+1447761378632Makoto Morimoto10/2013
857(2^1257787+32270)/(2*233*281*2207*3011)378620Makoto Morimoto12/2016
8582^1257728+20851378614Enzo Doria08/2023
859(77^200657-1)/76378536Paul Bourdelais08/2020
8602^1257107+45413378427Enzo Doria05/2025
8612^1254797+229487377732Enzo Doria11/2024
862(98^189619+1)/99377573Paul Bourdelais02/2021
863F(1803059)376817Henri Lifchitz06/2009
8642^1250590+29389376466Enzo Doria03/2024
865(10^376417-3^376417)/7376417Jon Grantham08/2023
8662^1250116+34951376323Enzo Doria08/2024
8672^1246724+213961375302Enzo Doria10/2023
8682^1245610+237919374966Enzo Doria06/2025
8692^1245230+19374852Stefano Morozzi10/2022
8702^1244263+230033374561Enzo Doria01/2025
8717^442674+4374103Paul Bourdelais02/2021
8722^1239151+35633373022Enzo Doria08/2024
8732^1238732+39181372896Enzo Doria11/2024
8742^1237699+34703372585Enzo Doria07/2024
875(97^187393-1)/96372306Paul Bourdelais09/2020
8762^1235070+46219371794Enzo Doria05/2025
87710^371696+7371697Alfred Reich05/2021
8782^1234709+883127371685Enzo Doria12/2016
8792^1234119+21803371507Enzo Doria09/2023
880(67^203431+1)/68371479Paul Bourdelais09/2021
8812^1233971+216593371463Enzo Doria12/2023
8822^1233212+27301371234Enzo Doria12/2023
8832^1231529+237557370728Enzo Doria06/2025
8842^1231466+283819370709Enzo Doria07/2017
8852^1229766+26659370197Enzo Doria12/2023
8862^1228899+30713369936Enzo Doria03/2024
8872^1228892+223831369934Enzo Doria06/2024
8882^1227635+45413369555Enzo Doria05/2025
889(49627^78961-1)/(49627^281-1)369460Ryan Propper11/2023
8902^1227060+226663369382Enzo Doria09/2024
8912^1226987+28163369360Enzo Doria02/2024
8922^1226725+234887369282Enzo Doria04/2025
8932^1226569+30857369235Enzo Doria03/2024
8942^1225268+46591368843Enzo Doria05/2025
89573^197880+197880368715Kellen Shenton06/2023
8965*3^771723-2^771723368207Jon Grantham08/2023
8972^1222741+231707368082Enzo Doria02/2025
8982^1222473+221597368002Enzo Doria04/2024
8992^1222211+22703367923Enzo Doria11/2023
900(2^1222097+19)/3367888Stefano Morozzi09/2022
9012^1220335+1881263367358Enzo Doria11/2016
9022^1218344+215641366759Enzo Doria12/2023
9032^1217510+220039366508Enzo Doria03/2024
9042^1217500+226321366505Enzo Doria09/2024
905(233^154787-1)/232366434Anonymous05/2024
9062^1216694+1884769366262Enzo Doria02/2017
9072^1216267+45143366133Enzo Doria05/2025
9082^1215889-3366020Paul Bourdelais06/2019
9092^1215296+1885441365841Enzo Doria03/2017
910(80^192133+1)/81365645Paul Bourdelais01/2021
9112^1214307+1888115365543Enzo Doria05/2017
9122^1213815+3365395Paul Bourdelais06/2019
913(80^191953+1)/81365302Paul Bourdelais01/2021
9142^1213313+215837365244Enzo Doria11/2023
9152^1208276+22201363728Enzo Doria09/2023
9162^1207345+1882577363448Enzo Doria12/2016
9172^1207336+217801363445Enzo Doria03/2024
9182^1207073+883727363366Enzo Doria03/2017
9193^761457-2363308Ryan Propper07/2015
920(10^363030+7)/337/443363025Alfred Reich12/2021
9212^1204869+224885362702Enzo Doria07/2024
9222^1203721+44117362357Enzo Doria04/2025
9232^1200972+141811361529Stefano Morozzi10/2022
924(2^1200924+324730)/2361514Stefano Morozzi06/2021
925(2^1200912+274110)/2361511Stefano Morozzi01/2021
9262^1200906+165249361509Stefano Morozzi07/2022
9272^1200890+166339361504Stefano Morozzi01/2023
928(2^1200887+344126)/2361503Stefano Morozzi10/2020
9292^1200877+186755361500Stefano Morozzi09/2022
9302^1200861+198521361496Stefano Morozzi11/2021
931(2^1200856+305790)/2361494Stefano Morozzi10/2020
932(2^1200853+372822)/2361493Stefano Morozzi06/2021
9332^1200812+324178)/2361481Stefano Morozzi06/2021
934(2^1200768+380458)/2361467Stefano Morozzi01/2021
9352^1200756+140917361464Stefano Morozzi05/2022
9362^1200741+184781361460Stefano Morozzi09/2022
937(2^1200741+293402)/2361459Stefano Morozzi07/2021
9382^1200734+142653361457Stefano Morozzi02/2023
9402^1200672+1880881361439Enzo Doria10/2016
9392^1200672+141535361439Stefano Morozzi09/2022
9412^1200669+178805361438Stefano Morozzi11/2022
9422^1200660+198555361435Stefano Morozzi12/2021
9432^1200657+164837361434Stefano Morozzi05/2022
9442^1200631+166431361426Stefano Morozzi02/2023
9452^1200627+150669361425Stefano Morozzi02/2023
946(2^1200603+356030)/2361418Stefano Morozzi10/2020
947(2^1200590+275854)/2361414Stefano Morozzi03/2021
9482^1200550+139297361402Stefano Morozzi10/2021
9492^1200486+172855361383Stefano Morozzi01/2023
950(2^1200456+320526)/2361373Stefano Morozzi10/2020
9512^1200443+142121361370Stefano Morozzi01/2023
9522^1200416+164065361362Stefano Morozzi01/2022
9532^1200331+155429361336Stefano Morozzi10/2021
955(2^1200289+348366)/2361323Stefano Morozzi10/2020
9542^1200289+141885361323Stefano Morozzi11/2022
956(2^1200284+273162)/2361322Stefano Morozzi10/2020
9572^1200252+194535361312Stefano Morozzi11/2021
958(2^1200250+364230)/2361311Stefano Morozzi10/2020
9592^1200227+156881361305Stefano Morozzi05/2022
960(2^1200209+305990)/2361299Stefano Morozzi10/2020
961(2^1200210+376278)/2361299Stefano Morozzi10/2020
9622^1200202+216499361297Enzo Doria12/2023
963(2^1200182+274462)/2361291Stefano Morozzi01/2021
9642^1200178+149193361290Stefano Morozzi07/2022
9652^1200168+140403361287Stefano Morozzi03/2022
966(2^1200162+275910)/2361285Stefano Morozzi03/2021
9672^1200157+168927361284Stefano Morozzi02/2023
9682^1200134+141385361277Stefano Morozzi08/2022
969(2^1200131+360150)/2361276Stefano Morozzi10/2020
970(2^1200118+290718)/2361272Stefano Morozzi01/2021
9712^1200022+192777361243Stefano Morozzi09/2022
9722^1200021+149777361243Stefano Morozzi10/2022
973(64*10^360173-1)/243360173Serge Batalov09/2014
974(59^203309+1)/60360029Paul Bourdelais09/2021
975(2*10^359860-11)/9359860Rytis Slatkevicius01/2023
9762^1195093+1882577359759Enzo Doria12/2016
9773^753451+5*2^753451359488Jon Grantham08/2023
9782^1192258+36739358906Enzo Doria09/2024
9792^1192251+47183358904Enzo Doria06/2025
980(6^461108-11)/5358812Paul Bourdelais04/2019
9812^1191375+8543358640Phil Moore06/2008
9822^1190972+1880191358519Enzo Doria11/2016
9832^1189930+28549358205Enzo Doria03/2024
984(45^216551-1)/44358004Paul Bourdelais08/2020
9852^1187473+237257357465Enzo Doria06/2025
9862^1187356+44641357430Enzo Doria06/2025
9872^1187005+230807357325Enzo Doria01/2025
988(50^210319-1)/49357324Paul Bourdelais08/2020
989(531^131072+25^131072)/2357184Kellen Shenton03/2021
9902^1186366+226747357132Enzo Doria09/2024
9912^1184565+21227356590Enzo Doria08/2023
9922^1180312+44173355310Enzo Doria04/2025
9932^1180159+22823355264Enzo Doria11/2023
9942^1179836+1885021355167Enzo Doria02/2017
9952^1178942+32269354897Enzo Doria04/2024
9962^1178474+43369354757Enzo Doria03/2025
9972^1177053+28607354329Enzo Doria02/2024
9982^1177027+234863354321Enzo Doria04/2025
999(19*10^353884-91)/9353885Alfred Reich02/2023
1000(10^353884*19-91)/9353885Alfred Reich10/2023


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Created by  Henri Lifchitz & Renaud Lifchitz : October, 26 2000, last modification: June, 28 2025 10:26 (Time in France)

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