PRP Records

Probable Primes Top 10000

(301883 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 ?
5001(182*10^136291+1)/3136293Robert Price02/2020
5002(88*10^136234+83)/9136235Robert Price03/2022
500323*10^136225-7136227Robert Price02/2020
5004L(651821)136223Henri Lifchitz09/2008
500525519^30908-30908^25519136208Frank Doornink02/2024
50062^452460+77701136205Enzo Doria05/2016
50072^452440-114755136199Enzo Doria04/2015
500828625^30558-30558^28625136190Frank Doornink05/2024
500932286^16489+16489^32286136157Hans Havermann11/2020
5010(47*10^136141+493)/9136142Robert Price03/2019
501127140^30699-30699^27140136108Frank Doornink01/2024
501240392^2339+2339^40392136082Hans Havermann12/2020
50132*10^136057-43136058Robert Price04/2018
50142^451971+21563136057Enzo Doria08/2023
5015(2^451956-5)/181136051Lelio R Paula07/2015
50162^451947-22165136050Enzo Doria07/2013
5017(3^451810)%(2^451810)136008Henri Lifchitz06/2025
50182^451787-21805136002Enzo Doria07/2013
50192^451734-112817135986Enzo Doria06/2014
5020(11*2^451714+1)/75135979Lelio R Paula07/2015
50212^451705-21879135977Enzo Doria07/2013
5022(4666^37249-1)/(4666^193-1)135957Ryan Propper11/2023
50232^451560-112349135934Enzo Doria06/2014
50242^451530+45135925Lelio R Paula08/2017
502526594^30719-30719^26594135925Frank Doornink03/2024
502631622^19875+19875^31622135922Hans Havermann11/2020
5027(25*10^135906-73)/3135907Robert Price09/2019
50282^451450-21743135900Enzo Doria07/2013
5029(7*10^135879+11)/9135879Tyler Busby01/2023
503035218^7199+7199^35218135846Hans Havermann11/2020
503135661^6446+6446^35661135844Hans Havermann11/2020
5032(7*33^89453-4743239)/32135835Eric Chen12/2023
503331869^18248+18248^31869135801Hans Havermann12/2020
5034(77*10^135789+157)/9135790Robert Price05/2022
50352^450958+60529135752Enzo Doria08/2023
50362^450805+65135706Lelio R Paula08/2017
503710^135669+21135670Boyan Hu12/2024
503830761^25728+25728^30761135669Hans Havermann12/2020
50392*10^135663+69135664Robert Price06/2020
504033962^9867+9867^33962135651Hans Havermann11/2020
504134474^8605+8605^34474135647Hans Havermann11/2020
504234501^8508+8508^34501135583Hans Havermann12/2020
504335487^6614+6614^35487135577Hans Havermann12/2020
5044(13725^32768+1)/131074135573Lelio R Paula03/2012
5045(313007#+121876)/(2*30469*424867)135559Makoto Morimoto08/2020
5046(5^193939+1)/6135557Paul Bourdelais12/2008
5047(76*10^135553-49)/9135554Robert Price07/2022
50485*3^284077+2^284077135540Jon Grantham08/2023
5049(844*10^135527-7)/9135529Robert Price05/2021
505027191^30560-30560^27191135517Frank Doornink01/2024
505140387^2260+2260^40387135463Hans Havermann12/2020
50522^449944-113247135447Enzo Doria07/2014
50532^449770-113247135395Enzo Doria07/2014
50542^449637-21471135355Enzo Doria07/2013
505526061^30650-30650^26061135351Frank Doornink03/2024
50562^449571-75135335Lelio R Paula08/2017
5057(14*10^135301-53)/3135302Robert Price12/2018
5058(3*2^449494+1)/61340334013135301Lelio R Paula07/2015
5059(13*10^135279+437)/9135280Robert Price04/2018
50602^449330-35135262Lelio R Paula08/2017
5061(19*2^449325+1)/9135261Lelio R Paula07/2015
5062(2709^39601+1)/(2709^199+1)135260Martin Hopf12/2023
5063(13*10^135184-43)/3135185Robert Price11/2018
50642^449049-115309135178Enzo Doria07/2015
5065(10^135174+191)/3135174Robert Price02/2018
50662^449030-15135172Lelio R Paula08/2017
5067(157*10^135151-1)/3135153Robert Price01/2022
5068(2^448966+100280245065)135153Paul Bourdelais05/2022
5069(27*2^448936-1)/11135144Lelio R Paula07/2015
5070(37*10^135099+251)/9135100Robert Price09/2021
507132221^15586+15586^32221135095Hans Havermann12/2020
50722^448762-351401135091Enzo Doria07/2015
50732*10^135083-43135084Robert Price04/2018
507431357^20278+20278^31357135056Hans Havermann12/2020
507532242^15445+15445^32242135055Hans Havermann12/2020
5076k(198476)135054Robert Price07/2020
507732461^14470+14470^32461135053Hans Havermann12/2020
507831353^20288+20288^31353135045Hans Havermann12/2020
50795*10^135019+77135020Robert Price12/2018
5080(10^135011+719)/9135011Serge Batalov12/2014
5081(197*10^134978+7)/3134980Robert Price12/2020
50822^448386-2786261134978Enzo Doria03/2016
508326480^30517-30517^26480134975Frank Doornink03/2024
5084(73*10^134939+143)/9134940Robert Price07/2019
508533957^9392+9392^33957134903Hans Havermann12/2020
50862^448122+20809134899Enzo Doria08/2023
50872^448113-113949134896Enzo Doria11/2014
508830958^22755+22755^30958134887Hans Havermann12/2020
50892^447888-2786639134828Enzo Doria03/2016
50902^447870-396765134823Enzo Doria07/2013
509110^(2*67404+1)-10^67404-1134809Robert Price07/2023
50922^447766-21791134791Enzo Doria07/2013
5093(19*10^134786-49)/3134787Robert Price05/2019
5094Phi(202173,10)/10064306514895399941409134758Makoto Kamada05/2019
5095(23*2^447647+1)/155134755Lelio R Paula07/2015
50962^447552-1019134727Yves Minet02/2014
5097(2*10^134720-41)/3134720Robert Price02/2018
5098(25*10^134695-97)/9134696Robert Price01/2022
50992^447437-113569134692Enzo Doria08/2014
51002^447426-65134689Lelio R Paula08/2017
51012^447357-2797573134668Enzo Doria04/2016
51022^447278+93134645Lelio R Paula08/2017
510333193^11370+11370^33193134623Hans Havermann12/2020
510430736^23979+23979^30736134619Hans Havermann11/2020
51052^447094-113193134589Enzo Doria07/2014
51063^282041-9934134568Enzo Doria05/2014
51072^447019-109039134567Enzo Doria04/2014
510831376^19437+19437^31376134561Hans Havermann12/2020
51092^446990-22041134558Enzo Doria07/2013
5110123^64370+122134528Karsten Bonath04/2018
511130100^29461+29461^30100134525Hans Havermann11/2020
511231251^20158+20158^31251134519Hans Havermann11/2020
51132^446782-39701134495Enzo Doria09/2015
511431817^16858+16858^31817134485Hans Havermann12/2020
511532448^13937+13937^32448134471Hans Havermann12/2020
51165^192321+3^192321-1134427Jon Grantham08/2023
51172^446494-16485134409Enzo Doria04/2013
511830042^29785+29785^30042134408Hans Havermann12/2020
511929504^30069-30069^29504134405Norbert Schneider12/2014
51202^446441+65134393Lelio R Paula08/2017
5121(10^134385+719)/9134385Serge Batalov12/2014
512230043^29688+29688^30043134370Hans Havermann12/2020
5123(2*10^134364+529)/9134364Robert Price01/2018
512434657^7512+7512^34657134323Hans Havermann11/2020
5125(13*2^446187-1)/661134314Lelio R Paula07/2015
51265^192103+3^192103+2^192103+1134275Matthias Baur12/2019
512742035^1564+1564^42035134270Hans Havermann12/2020
5129(2^446022-7)/339134264Lelio R Paula07/2015
512830621^24248+24248^30621134264Hans Havermann12/2020
513030341^26562+26562^30341134237Hans Havermann11/2020
5131(189^58967-1)/188134234Anonymous06/2024
513210^134209+99867134210Patrick De Geest05/2021
513310^134209-80000001134209Robert Price04/2021
513410^134209-323283134209Patrick De Geest05/2021
513529976^29953+29953^29976134186Hans Havermann12/2020
513635038^6755+6755^35038134183Hans Havermann12/2020
513763^74568+2134174Lelio R Paula06/2017
51382^445671-22071134161Enzo Doria07/2013
5139532^49205+49205^532134129Norbert Schneider02/2019
514036453^4780+4780^36453134127Hans Havermann04/2021
5141(28*10^134122-1)/9134123Serge Batalov10/2014
51422^445515-113859134114Enzo Doria10/2014
5144(22*10^134111-37)/3134112Robert Price04/2019
514331083^20636+20636^31083134112Hans Havermann04/2021
51453*2^445478+5134103Jon Grantham07/2023
514631622^17379+17379^31622134079Hans Havermann04/2021
51475*2^445380-3134074Jon Grantham07/2023
5148(6*32^89076+4241)/31134073Eric Chen11/2023
5149(277*10^134059-7)/9134061Robert Price02/2022
51502^445328-216917134058Enzo Doria05/2014
51512^445202+1874899134020Enzo Doria06/2016
51525^191739-3^191739-1134020Jon Grantham08/2023
5153(35*10^134003-89)/9134004Robert Price02/2022
5154(13*2^445102+1)/17133989Lelio R Paula07/2015
5155(35*10^133979-593)/9133980Robert Price07/2018
51562*10^133955+51133956Robert Price05/2018
5157(49*10^133952+437)/9133953Robert Price09/2021
51582^444964-113639133948Enzo Doria08/2014
515931811^16240+16240^31811133943Hans Havermann04/2021
516010^133902+167841133903Patrick De Geest05/2021
516228118^30097-30097^28118133902Norbert Schneider01/2015
516110^133902-100001133902Robert Price07/2020
51632^444784-113859133894Enzo Doria10/2014
5164(132^63127-1)/131133864Anonymous06/2024
516532303^13914+13914^32303133846Hans Havermann04/2021
5166(29^91493-3^91493)/26133798Robert Price06/2025
5167(2276213*2^444444+1)/3133797Alex_soldier11/2022
5168(1403559*2^444444+1)/5133797Alex_soldier11/2022
5169(1209887*2^444444+1)/9133797Alex_soldier11/2022
5170(608239*2^444444+1)/25133796Alex_soldier11/2022
5171(1824587*2^444444+1)/27133796Alex_soldier11/2022
5172(40795*2^444444+1)/7133795Alex_soldier11/2022
517330739^22458+22458^30739133757Hans Havermann04/2021
517434942^6721+6721^34942133739Hans Havermann04/2021
5175(3^280229-1)/1120918133698Aurel Gibier03/2025
5176(2^444046+100280245065)133672Paul Bourdelais05/2022
517734792^6935+6935^34792133638Hans Havermann04/2021
5178(266*10^133603+1)/3133605Robert Price04/2020
517932261^13842+13842^32261133600Hans Havermann04/2021
5180(89*10^133580+1)/9133581Serge Batalov05/2010
5181(134*10^133573-11)/3133575Robert Price01/2022
518226726^30173-30173^26726133574Frank Doornink03/2024
51832^443721+39527133574Enzo Doria11/2024
518462^74521-61^74521133571Robert Price05/2013
5185(182*10^133543+1)/3133545Robert Price02/2020
5186(103*10^133535+11)/3133537Robert Price01/2021
518732589^12520+12520^32589133537Hans Havermann03/2021
5188L(638839)/274700771133502Serge Batalov07/2024
518934516^7373+7373^34516133496Hans Havermann04/2021
51908*10^133487-37133488Robert Price03/2022
519130135^26882+26882^30135133482Hans Havermann04/2021
51922^443198-1867301133416Enzo Doria03/2016
519327^93192+26133392Anonymous09/2024
5194(19*10^133390+101)/3133391Robert Price09/2019
5195(71^72043-1)/70133369Paul Bourdelais09/2017
519636117^4910+4910^36117133311Hans Havermann04/2021
51972^442799+1874633133296Enzo Doria06/2016
5198L(637751)133283Henri Lifchitz09/2008
5199109^65410-2133269Lelio R Paula10/2017
52002^442688-113489133263Enzo Doria08/2014
5201(7*2^442640-1)/783133246Lelio R Paula07/2015
5202(9*2^442463+1)/17441133192Lelio R Paula07/2015
52032^442437-1849993133187Enzo Doria08/2015
52042^442430-2791721133185Enzo Doria03/2016
5205(13*2^442428-1)/309133183Lelio R Paula07/2015
520629959^27870+27870^29959133172Hans Havermann03/2021
5207(25*2^442379-1)/71133169Lelio R Paula07/2015
52082^442368+213691133167Enzo Doria09/2023
520934240^7737+7737^34240133145Hans Havermann03/2021
5210452^50145+50145^452133142Norbert Schneider09/2020
5211(355^52201-1)/354133122Tom Wu08/2024
5212(3^278981-1)/14507014133101Paul Vanderveen05/2025
521330659^21796+21796^30659133011Hans Havermann04/2021
521433276^9935+9935^33276133010Hans Havermann04/2021
521530111^26122+26122^30111133001Hans Havermann04/2021
521630790^20869+20869^30790132998Hans Havermann04/2021
5218(2^441799+78557)/5132995Lelio R Paula07/2015
52178*10^132994-27132995Robert Price10/2021
5219(109*10^132992+11)/3132994Robert Price06/2022
52202^441781-2787883132990Enzo Doria03/2016
5221fibonacci(636232)+4132965Jon Grantham08/2023
5222(3*2^441685+1)/749132959Lelio R Paula07/2015
52232^441618+37132941Lelio R Paula08/2017
522434857^6514+6514^34857132940Hans Havermann04/2021
522534065^7988+7988^34065132937Hans Havermann04/2021
522635571^5452+5452^35571132914Hans Havermann04/2021
52272^441521-113575132912Enzo Doria08/2014
52287*10^132884-99132885Robert Price06/2019
522926987^29988-29988^26987132882Frank Doornink03/2024
5230(103*10^132879+17)/3132881Robert Price08/2020
52312^441396-65132874Lelio R Paula08/2017
523233350^9633+9633^33350132859Hans Havermann04/2021
52332^441330+1871959132854Enzo Doria05/2016
523425772^30111-30111^25772132825Frank Doornink02/2024
52352^441063+383132774Lelio R Paula06/2012
5236(10^132753+7)/17/19132751Alfred Reich06/2021
5237(22*10^132746+53)/3132747Robert Price07/2019
5238(77*10^132744-149)/9132745Robert Price03/2022
5239(22*10^132732+119)/3132733Robert Price04/2021
52402^440846+1870909132708Enzo Doria05/2016
5241(948^44579-1)/947132701Jinyuan Wang04/2023
52422^440656-113489132651Enzo Doria08/2014
5243numbpart(14180123587)132646Serge Batalov04/2017
524432950^10591+10591^32950132622Hans Havermann04/2021
524533302^9597+9597^33302132614Hans Havermann04/2021
5246(19*10^132550+191)/3132551Robert Price05/2019
5247(2^440399-1)/(16210820281161978209*31518475633*880799)132538Dario Alpern01/2015
5248(38^83891+1)/39132529Robert Price09/2013
52492*10^132493-43132494Robert Price04/2018
525031352^16809+16809^31352132480Hans Havermann04/2021


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Created by  Henri Lifchitz & Renaud Lifchitz : October, 26 2000, last modification: September, 06 2025 11:54 (Time in France)

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