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 ?
6751(17*2^379246-1)/17407114162Lelio R Paula03/2014
6752(2^379192+226)/2114148Stefano Morozzi09/2020
6753(228^48407-1)/227114139Alexander Zhirkov03/2023
67546*10^114091+23114092Robert Price09/2020
6755(4*10^114076+143)/3114077Robert Price03/2018
6756332*25^81584+12357114053Eric Chen10/2023
6757(2^378820+3226)/2114036Stefano Morozzi01/2021
6758(2^378754+2058)/2114017Stefano Morozzi09/2020
675913643^27572-27572^13643114008Norbert Schneider12/2022
6761(46*10^113969+683)/9113970Robert Price03/2019
6760(83*10^113969+133)/9113970Robert Price08/2021
676232226^3439+3439^32226113966Hans Havermann02/2021
6763(77*10^113963-149)/9113964Robert Price03/2022
676478*10^113954-7113956Robert Price10/2020
67652*10^113941+9113942Dmitry Domanov11/2010
676610^113933+145897113934Patrick De Geest02/2021
6769(2^378478+1642)/2113933Stefano Morozzi09/2020
676710^113933-8000000001113933Robert Price11/2020
676810^113933-66167113933Patrick De Geest02/2021
67702339662057597*10^113903+9113916Robert Price03/2021
67714*10^113905+91113906Robert Price08/2018
677210^113894+76609113895Patrick De Geest02/2021
677410^113894-10000001113894Robert Price09/2020
677310^113894-373947113894Patrick De Geest02/2021
677533933^2270+2270^33933113881Hans Havermann02/2021
67764*10^113874-21113875Robert Price09/2018
67772^378272-16565113872Enzo Doria04/2013
67782^378217-109075113855Enzo Doria04/2014
67792^378198+67113849Lelio R Paula03/2013
67802^378173-3249113842Yves Minet12/2014
6781(2^378155-5)/6597113833Lelio R Paula03/2014
67822^378137+1334025113831Henri Lifchitz10/2024
678392941#+(355049#)/(92941#)113830Makoto Morimoto10/2017
678430030^6173+6173^30030113829Hans Havermann01/2021
67852^378128-262977113828Enzo Doria05/2014
67862^378123-113215113827Enzo Doria07/2014
67876^146274-18893113824Enzo Doria03/2013
678834596^1949+1949^34596113815Hans Havermann02/2021
67892^378078+75113813Lelio R Paula03/2013
6790(28*10^113810+449)/9113811Robert Price11/2021
679126273^21448+21448^26273113799Hans Havermann02/2021
67922^377966+255255113780Paul Bourdelais10/2021
67932^377940+63113772Lelio R Paula03/2013
67942^377941-2785843113772Enzo Doria04/2016
6795(7*10^113757+11)/9113757Tyler Busby01/2023
67962^377810+1875109113733Enzo Doria09/2016
67972^377803-1838635113731Enzo Doria05/2015
67982^377799+52223113729Yves Minet08/2010
6799(2^377791+3258)/2113727Stefano Morozzi02/2021
680011^109190-270113710Enzo Doria12/2012
680128206^10739+10739^28206113698Hans Havermann01/2021
68027*10^113693+9113694Robert Price09/2015
680313899^27442+27442^13899113692Norbert Schneider12/2020
6804(82*10^113681+161)/9113682Robert Price10/2019
680526121^22478+22478^26121113673Hans Havermann01/2021
68064*10^113658+49113659Robert Price01/2019
6807(10^113656+7)/40231/6439001113645Alfred Reich06/2021
6808(2*10^113631+529)/9113631Robert Price01/2018
68092^377408-2798279113612Enzo Doria04/2016
6810(292^46336+1)/(292^256+1)113605Martin Hopf12/2023
681113706^27459+27459^13706113596Norbert Schneider12/2020
68125*10^113586+57113587Robert Price12/2018
6813(2^377242+2794)/2113561Stefano Morozzi02/2021
68142^377222+93679113556Yves Minet02/2011
6816262147#+316847113552Makoto Morimoto02/2016
681527172^15101+15101^27172113552Hans Havermann01/2021
6817(2^377131+2018)/2113528Stefano Morozzi09/2020
68182^377026-458903113497Enzo Doria04/2015
6819(2^377014+2202)/2113493Stefano Morozzi09/2020
682034791^1828+1828^34791113488Hans Havermann02/2021
6821(2^376967+258)/2113479Stefano Morozzi09/2020
6822(29*10^113468-17)/3113469Robert Price09/2019
682335^73477-34^73477113454Robert Price05/2012
6824(14*10^113451-89)/3113452Robert Price05/2020
68252^376790+27113426Lelio R Paula03/2013
68262^376786-112701113424Enzo Doria06/2014
68272^376731+21113408Lelio R Paula03/2013
68289*10^113394-73113395Robert Price01/2021
682929660^6651+6651^29660113387Hans Havermann01/2021
68312^376634+1871245113379Enzo Doria05/2016
6830(4^188318+17)/3113379Robert Price02/2017
6832E(29532)/492842728006750534663978950979381235113367Thomas Ritschel01/2021
68332^376576-344369113361Enzo Doria07/2015
68342^376549-4543113353Yves Minet03/2019
6835(17*2^376526-1)/223113345Lelio R Paula03/2014
6836(27*2^376441-1)/811113319Lelio R Paula03/2014
6837(2^376350+3538)/2113293Stefano Morozzi09/2020
683827265^14272+14272^27265113273Hans Havermann02/2021
683932174^3315+3315^32174113269Hans Havermann02/2021
6840(2*10^113248+73)/3113248Robert Price09/2020
68412^376128-21237113226Enzo Doria06/2013
68425*10^113224-81113225Robert Price01/2019
684310^113220+51409113221Patrick De Geest02/2021
684510^113220-1000001113220Robert Price08/2020
684410^113220-61779113220Patrick De Geest02/2021
6846(2^376102+1578)/2113218Stefano Morozzi09/2020
6847(2^375996+3102)/2113186Stefano Morozzi09/2020
684837258^1091+1091^37258113184Hans Havermann02/2021
6849(94*10^113176+11)/3113178Robert Price04/2020
6850(46*10^113162+521)/9113163Robert Price02/2019
685114*29^77375+17875113155Eric Chen06/2025
6852(2^375885+3614)/2113153Stefano Morozzi09/2020
6853(2^375873+2006)/2113149Stefano Morozzi09/2020
68543*10^113137+23113138Robert Price03/2022
6855(8*10^113135-269)/9113135Robert Price09/2021
6856(2^375726+694)/2113105Stefano Morozzi09/2020
685726050^21959+21959^26050113100Hans Havermann02/2021
68582^375638-1787171113079Enzo Doria03/2016
6859(2^375563+2178)/2113056Stefano Morozzi09/2020
68602^375537+4847113048Yves Minet02/2011
6861(17^91837+16^91837)/33113000Robert Price08/2013
68625*F(270343)*(F(270343)+1)+1112997Serge Batalov04/2015
68632^375350-3221112992Yves Minet07/2011
6864(13*2^375306+1)/7112979Lelio R Paula03/2014
68652^375305+76757112979Enzo Doria05/2016
68662^375258+1874989112964Enzo Doria07/2016
6867(29^77237-1)/28112950Robert Price04/2012
686826620^17483+17483^26620112939Hans Havermann01/2021
68692^375154+74959112933Enzo Doria04/2016
6870(266*10^112930-17)/3112932Robert Price07/2020
6871(2^375134+778)/2112927Stefano Morozzi09/2020
6872(85*10^112919+293)/9112920Robert Price12/2019
687329412^6899+6899^29412112907Hans Havermann02/2021
6874(191*10^112903-17)/3112905Robert Price11/2021
6875(2^375022+1210)/2112893Stefano Morozzi09/2020
687625992^22039+22039^25992112889Hans Havermann02/2021
68772^374993-2787163112885Enzo Doria11/2015
6878(697*10^112869+23)/9112871Robert Price04/2021
6879(19*10^112851+377)/9112852Alfred Reich11/2022
688030420^5111+5111^30420112813Hans Havermann02/2021
688113699^27268+27268^13699112800Norbert Schneider12/2020
6882123^53970+2112793Lelio R Paula06/2013
688312308*27^78796+23112790Eric Chen07/2023
688428942^7887+7887^28942112785Hans Havermann01/2021
68852^374640-4685112778Yves Minet05/2019
688612^104501-11112776Riley Fisher12/2023
688757290^93+93^57290112775Hans Havermann01/2021
6888115^54726-54726^115112774Norman Luhn09/2024
688913608^27277-27277^13608112758Norbert Schneider12/2022
6890(2^374556+682)/2112753Stefano Morozzi09/2020
6891p(22852)#/2+512112745Robert Price05/2017
6892(11*10^112742-131)/3112743Robert Price09/2018
68932^374441-21049112718Enzo Doria06/2013
68944*10^112706-93112707Robert Price07/2020
6895(2^374321+1)/3112682H.&R. Lifchitz12/2000
6896(2^374213+1766)/2112650Stefano Morozzi09/2020
6897(2^374094+2674)/2112614Stefano Morozzi09/2020
6898(13^101089-1)/12112607Paul Bourdelais03/2010
68993^236011-8828112606Enzo Doria05/2014
690031854^3427+3427^31854112602Hans Havermann02/2021
6901(85*10^112530-373)/9112531Robert Price05/2021
6902(2^373748+1090)/2112510Stefano Morozzi09/2020
6903(2^373727+1806)/2112503Stefano Morozzi01/2021
690427618^11821+11821^27618112479Hans Havermann01/2021
6905U(602921)/4823369112479Serge Batalov07/2024
690626343^18580+18580^26343112460Hans Havermann01/2021
690739^70666+2112435Lelio R Paula11/2013
6908(134*10^112400+7)/3112402Robert Price02/2020
6909(2^373365+326)/2112394Stefano Morozzi09/2020
6910(2^373350-7)/3112390Lelio R Paula03/2014
69112^373306-1840931112377Enzo Doria06/2015
69128*10^112371-37112372Robert Price03/2022
6913(2^373262+270)/2112363Stefano Morozzi09/2020
69146*10^112359-79112360Robert Price03/2022
691534409^1842+1842^34409112356Hans Havermann02/2021
6916(142*10^112352-7)/9112354Robert Price12/2019
691725580^24633+24633^25580112336Hans Havermann01/2021
69182^373117+1872107112320Enzo Doria05/2016
6919(2^373083+2226)/2112309Stefano Morozzi01/2021
6920(35*10^112308+37)/9112309Robert Price05/2022
692127963^10376+10376^27963112301Hans Havermann01/2021
69222^373040+2792761112297Enzo Doria03/2016
6923(156^51203-1)/155112293Anonymous06/2024
6924EPrime(112280)112280Eric W. Weisstein10/2010
69252^372950+7112270Lelio R Paula03/2013
69262^372945+1872167112268Enzo Doria05/2016
692736274^1243+1243^36274112249Hans Havermann02/2021
6928(55*10^112246+629)/9112247Robert Price01/2022
6929(2^372872+3798)/2112246Stefano Morozzi02/2021
693025513^25060+25060^25513112232Hans Havermann02/2021
6931(53*10^112229-611)/9112230Robert Price02/2022
6932(2^372754+3094)/2112210Stefano Morozzi09/2020
69336*10^112208+43112209Robert Price07/2020
6934(2^372728+3058)/2112203Stefano Morozzi09/2020
693532061^3158+3158^32061112195Hans Havermann02/2021
69362^372695+72113112193Enzo Doria04/2016
69372^372689-2563112191Yves Minet07/2014
69382^372638-1859441112176Enzo Doria03/2016
69393^235074-113056112159Enzo Doria07/2014
6940-E(29242)/489848365125303139750087112140Thomas Ritschel01/2021
6941(2^372514+1822)/2112138Stefano Morozzi02/2021
694229468^6387+6387^29468112135Hans Havermann02/2021
6943(2^372428+3742)/2112112Stefano Morozzi01/2021
694425375^25454-25454^25375112110Norbert Schneider01/2021
6945131^52949-130112108Norbert Schneider02/2019
6946(91*10^112098-1)/9112100Robert Price04/2015
6947(68*10^112087-149)/9112088Robert Price07/2022
69482^372314+212419112078Enzo Doria08/2023
69492^372310-85061112077Paul Bourdelais02/2012
6950(10^112067+53)/9112067Serge Batalov07/2015
6951(2^372237+2082)/2112055Stefano Morozzi09/2020
695275^59760+2112054Lelio R Paula08/2013
6953(2^372200+1710)/2112044Stefano Morozzi09/2020
6954(10^112048+7)/8747/373157112039Alfred Reich06/2021
6955(2^372181+2250)/2112038Stefano Morozzi01/2021
6956F(536233)/825798821/1102495049/5641839306317112036Serge Batalov07/2024
6957(2^372161+2574)/2112032Stefano Morozzi09/2020
69588*10^112018-49112019Robert Price08/2019
69602^372108+74221112016Enzo Doria04/2016
6959(2^372109+2046)/2112016Stefano Morozzi09/2020
69618*10^112011-73112012Robert Price01/2022
6962(184*10^112007-1)/3112009Robert Price02/2020
69635*10^112003+81112004Robert Price03/2019
6964215^48018+48018^215112000Norbert Schneider10/2018
696525549^24148+24148^25549111979Hans Havermann02/2021
69662^371970-459491111975Enzo Doria05/2015
696741^69427-40^69427111971Robert Price07/2012
6968(2^371782+358)/2111918Stefano Morozzi01/2021
696915*25^80056+446111915Eric Chen10/2023
6970(34*10^111902-547)/9111903Robert Price03/2021
6971(10^111902+71)/9111902Serge Batalov07/2015
6972(2^371625+1610)/2111870Stefano Morozzi09/2020
697329080^7027+7027^29080111865Hans Havermann01/2021
697431307^3730+3730^31307111820Hans Havermann02/2021
69752^371440-112865111815Enzo Doria06/2014
69762^371426-459161111811Enzo Doria05/2015
697725768^21771+21771^25768111779Hans Havermann02/2021
697828022^9747+9747^28022111777Hans Havermann02/2021
6979(94*10^111770+11)/3111772Robert Price04/2020
69802^371276-461267111766Enzo Doria07/2015
69816*10^111760+43111761Robert Price07/2020
698298079!4-1024111747Robert Price11/2019
6983(2^371186+3162)/2111738Stefano Morozzi09/2020
698410^(2*55862+1)-4*10^55862-1111725Robert Price07/2023
69852^371098-113261111712Enzo Doria07/2014
6986(7*10^111706-61)/9111706Erik Branger01/2011
69872^371044+1869391111696Enzo Doria05/2016
698826310^17581+17581^26310111688Hans Havermann01/2021
698988^57416+87111645Norbert Schneider11/2015
69902^370829-109693111631Enzo Doria04/2014
699115^94906-2111619Lelio R Paula11/2013
699225835^20904+20904^25835111614Hans Havermann02/2021
6993(2^370726+1198)/2111600Stefano Morozzi09/2020
699427758^10479+10479^27758111597Hans Havermann02/2021
69952^370695-4627111591Yves Minet05/2019
69967*10^111579-87111580Robert Price06/2020
69972^370643-37111575Yves Minet01/2012
6998(2^370655-5)/2439111575Lelio R Paula03/2014
69992^370610-3911111565Yves Minet04/2017
7000(154*10^111549+17)/9111551Robert Price06/2022


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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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