PRP Records

Probable Primes Top 10000

(302825 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(5*10^139457+79)/3139458Robert Price03/2018
50022^463237-99139449Lelio R Paula09/2017
5003(49*10^139442+383)/9139443Robert Price04/2019
500431155^29902+29902^31155139441Hans Havermann05/2021
5005(7*10^139417-547)/9139417Robert Price01/2018
500629636^31175-31175^29636139409Frank Doornink05/2024
5007(10^139398+191)/3139398Robert Price02/2018
500823*10^139386-3139388Robert Price10/2021
50092^463019+79463139383Enzo Doria06/2016
50103^292129-112756139381Enzo Doria07/2014
5011(15*2^462951+1)/527139361Lelio R Paula08/2015
501231922^23205+23205^31922139359Hans Havermann05/2021
5013(19*10^139336+503)/9139337Alfred Reich11/2023
50152^462855-1865707139334Enzo Doria02/2016
501431237^28876+28876^31237139334Hans Havermann05/2021
5016(86*10^139315+121)/9139316Robert Price08/2019
50172^462786-292043139313Enzo Doria08/2015
501838915^3798+3798^38915139299Hans Havermann05/2021
5020(26*10^139289+1)/9139290Serge Batalov05/2010
5019(17*10^139289+7)/3139290Robert Price06/2023
502134065^12248+12248^34065139260Hans Havermann05/2021
502236425^6654+6654^36425139256Hans Havermann05/2021
502339252^3527+3527^39252139243Hans Havermann05/2021
5024(17*10^139239+67)/3139240Robert Price01/2019
502531887^23248+23248^31887139231Hans Havermann05/2021
5026(25*10^139210-97)/9139211Robert Price01/2022
50272^462238-935139148Yves Minet02/2014
5028(29*10^139134-119)/9139135Robert Price12/2021
5029U(687859)/4127153139105Serge Batalov07/2024
5030(109*10^139100-7)/3139102Robert Price03/2021
503138744^3885+3885^38744139068Hans Havermann05/2021
503231112^29499+29499^31112139065Hans Havermann05/2021
50332*10^139043-63139044Robert Price01/2022
503436390^6613+6613^36390139025Hans Havermann04/2021
503530554^30989-30989^30554138988Frank Doornink05/2024
50362*10^138975+33138976Robert Price11/2021
503742437^1882+1882^42437138966Hans Havermann05/2021
503832151^20990+20990^32151138958Hans Havermann05/2021
503932154^20933+20933^32154138933Hans Havermann04/2021
504031082^29499+29499^31082138931Hans Havermann04/2021
504130573^30962-30962^30573138876Frank Doornink05/2024
50422^461228+1870441138844Enzo Doria05/2016
50432^461204-113675138837Enzo Doria08/2014
5044(397227*29^94935-19)/28138837Eric Chen06/2025
5045(2^461139-7)/47138815Lelio R Paula08/2015
5046(17*10^138812-521)/9138813Robert Price04/2018
50473*10^138811-11138812Robert Price07/2018
504829109^31088-31088^29109138778Frank Doornink05/2024
5049(28*10^138768+173)/3138769Robert Price12/2019
5050(17*2^460963+1)/124051613138757Lelio R Paula08/2015
5051(379*10^138737-1)/9138739Robert Price02/2020
5052(43*10^138648+101)/9138649Robert Price11/2018
50532^460567-113541138645Enzo Doria08/2014
50542^460539+224789138637Enzo Doria07/2024
5055(10^138622+161)/9138622Robert Price09/2021
50567*10^138604+3138605Robert Price08/2015
5057(133*10^138600+17)/3138602Robert Price11/2021
505833912^12203+12203^33912138581Hans Havermann05/2021
50592^460330+69138574Lelio R Paula09/2017
5060(17*10^138569-77)/3138570Robert Price08/2019
506131186^27725+27725^31186138556Hans Havermann05/2021
5062(41^85909-3^85909)/38138552Robert Price09/2025
5063(16*10^138545+89)/3138546Robert Price03/2021
506439753^3056+3056^39753138546Hans Havermann05/2021
506531282^26847+26847^31282138545Hans Havermann05/2021
50666*10^138520-37138521Robert Price02/2021
50692^460078-69581138498Enzo Doria12/2015
506731830^22447+22447^31830138498Hans Havermann05/2021
5068Phi(237987,2^3)138498Henri Lifchitz12/2025
507037384^5065+5065^37384138492Hans Havermann05/2021
507128736^31055-31055^28736138457Frank Doornink05/2024
507234774^9585+9585^34774138456Hans Havermann05/2021
507310^138444-5001138444Robert Price12/2021
50742^459768+1531138404Lelio R Paula06/2012
5075(266*10^138328-17)/3138330Robert Price07/2020
507627200^31193-31193^27200138328Frank Doornink01/2024
50772024^41836+2025138319Henri Lifchitz01/2025
507828782^31019-31019^28782138318Frank Doornink05/2024
507932963^15696+15696^32963138306Hans Havermann05/2021
50802^459343-113611138277Enzo Doria08/2014
5081(28*10^138240+113)/3138241Robert Price03/2020
50822^459199+1874393138233Enzo Doria06/2016
508333339^14002+14002^33339138230Hans Havermann05/2021
508430137^30860-30860^30137138226Frank Doornink05/2024
50852^459063-345307138192Enzo Doria06/2015
50862*10^138162-43138163Robert Price04/2018
50872^458927-112747138151Enzo Doria06/2014
50882^458927-69217138151Enzo Doria11/2015
508930907^29458+29458^30907138130Hans Havermann05/2021
509032882^15837+15837^32882138094Hans Havermann05/2021
509139252^3295+3295^39252138083Hans Havermann05/2021
509233789^12190+12190^33789138062Hans Havermann06/2021
5093555555*2^458524+1513138036Darren Bedwell08/2009
509428095^31028-31028^28095138033Frank Doornink05/2024
509530931^29002+29002^30931138028Hans Havermann05/2021
50962^458465+2^32+1138012T. D. Noe06/2007
509732206^19275+19275^32206138003Hans Havermann05/2021
50982^458321-113053137969Enzo Doria07/2014
50996^177298+323137965Riley Fisher03/2023
51002^458298+79459137962Enzo Doria06/2016
510130254^30789-30789^30254137959Frank Doornink05/2024
51022^458248-21815137947Enzo Doria07/2013
51032^458194+1876549137931Enzo Doria07/2016
5104(318259#+325270)/(2^2*5*11*2957)137907Makoto Morimoto10/2017
5105(318259#+2625)/(3^2*5*7^5*22965193)137899Makoto Morimoto06/2019
5106(793*10^137887+53)/9137889Robert Price01/2022
51072^457937+57137853Lelio R Paula09/2017
510828714^30921-30921^28714137849Frank Doornink05/2024
5109(8*10^137845+13)/3137846Robert Price06/2018
51102^457822+105137819Donovan Johnson06/2006
51112^457754-113711137798Enzo Doria09/2014
511211^132315-360137792Enzo Doria09/2012
5113(2^659318)%L(659318)137787Henri Lifchitz05/2025
511432072^19689+19689^32072137725Hans Havermann06/2021
511526529^31132-31132^26529137720Frank Doornink03/2024
511644592^1225+1225^44592137707Hans Havermann05/2021
511728986^30857-30857^28986137690Frank Doornink05/2024
51182^457347-37137676Lelio R Paula09/2017
51192^457322-2786393137668Enzo Doria10/2015
5120gcd(Phi(699340,10),(10^34967+1)^3*(10^34967+1+10^17484)-(10^69934+10^34967)*(10^17484-1)+10^104901)137664Serge Batalov04/2015
5121Phi(699340M,10)137664Anonymous03/2025
512234015^11134+11134^34015137647Hans Havermann06/2021
51232^457240-59939137643Enzo Doria10/2015
5124(856*10^137633-1)/9137635Robert Price03/2020
512536232^6289+6289^36232137631Hans Havermann05/2021
51262^457120-21575137607Enzo Doria07/2013
5127(11*2^456978+1)/15137564Lelio R Paula07/2015
512830963^27722+27722^30963137564Hans Havermann04/2021
512933722^12003+12003^33722137562Hans Havermann06/2021
5130(7*25^98399+10613)/12137556Curtis Bright05/2015
513141901^1918+1918^41901137555Hans Havermann06/2021
5132(7*10^137551-1)/3137552Robert Price08/2022
513332930^15021+15021^32930137539Hans Havermann05/2021
513431178^25785+25785^31178137538Hans Havermann05/2021
5135419^52446+52446^419137525Norbert Schneider11/2020
51362^456813+214175137515Enzo Doria10/2023
51372^456796-113513137510Enzo Doria08/2014
513831788^21137+21137^31788137485Hans Havermann04/2021
5139(7*2^456655+1)/39137467Lelio R Paula07/2015
514027151^31004-31004^27151137466Frank Doornink01/2024
51412^456503-114361137422Enzo Doria01/2015
5142(11*2^456387+1)/19137386Lelio R Paula07/2015
514330618^30618-5^5137352Serge Batalov04/2024
514436248^6147+6147^36248137332Hans Havermann05/2021
514531986^19651+19651^31986137329Hans Havermann05/2021
51462^456167+22313137320Enzo Doria09/2023
514731817^20656+20656^31817137292Hans Havermann05/2021
5148(37^87559-1)/3966428818030710150468137289Paul Vanderveen06/2025
5149(71*10^137250+1)/9137251Serge Batalov05/2010
51502^455922+76249137247Enzo Doria05/2016
515131310^24171+24171^31310137241Hans Havermann05/2021
515214^119741-119741^14137239Serge Batalov04/2016
515335014^8297+8297^35014137218Hans Havermann05/2021
5154(19*2^455760+1)/3455137196Lelio R Paula07/2015
5156124^(2^16)+57^(2^16)137195Valeryi Kuryshev02/2011
5155124^65536+57^65536137195Serge Batalov03/2018
51572^455689+72677137177Enzo Doria04/2016
5158(17948!)^2+Prime(17948)137118Robert Price08/2014
515931287^24128+24128^31287137116Hans Havermann05/2021
5160(37^87421-1)/36137093Robert Price03/2012
516136233^6070+6070^36233137077Hans Havermann05/2021
5162(8*10^137073-17)/9137073Serge Batalov11/2022
516338418^3697+3697^38418137070Hans Havermann04/2021
51642^455323-57137066Lelio R Paula09/2017
5165(56*10^137019+583)/9137020Robert Price08/2021
516625017^31148-31148^25017136997Frank Doornink12/2023
5167(73*17^111333-9)/16136991Curtis Bright05/2015
51682^455025-112723136977Enzo Doria06/2014
516933876^11039+11039^33876136959Hans Havermann05/2021
5170(19860^32041-1)/(19860^179-1)136943Ryan Propper11/2023
5171(251^57059-1)/250136921Anonymous04/2024
517235142^7873+7873^35142136919Hans Havermann05/2021
5173(4997*31^91805-1)/2136918Eric Chen05/2024
517466*10^136894+7136896Robert Price07/2020
517528766^30697-30697^28766136875Frank Doornink05/2024
51762^454675-1777136871Yves Minet10/2011
517731676^20931+20931^31676136866Hans Havermann05/2021
51783*10^136829+29136830Robert Price05/2018
51794*10^136813-57136814Robert Price10/2018
5180(6092*28^94536-143)/9136812Curtis Bright05/2015
5181fibonacci(654572)-2136798Jon Grantham08/2023
518237359^4588+4588^37359136795Hans Havermann05/2021
51832^454348-53136773Lelio R Paula09/2017
518431^91680-2136729Lelio R Paula05/2017
51852^454199-113697136728Enzo Doria09/2014
518630785^27622+27622^30785136725Hans Havermann05/2021
518732973^14014+14014^32973136725Hans Havermann05/2021
51897*10^136716+69136717Robert Price07/2019
518836002^6273+6273^36002136717Hans Havermann05/2021
51906*10^136692+53136693Robert Price05/2020
5191Phi(568997,2)136692Henri Lifchitz02/2026
5192(13*10^136687+47)/3136688Robert Price10/2018
5193F(2*453976)%(2^453976)136661Henri Lifchitz06/2025
51942^453935-2791357136649Enzo Doria01/2016
51952^453906-69131136640Enzo Doria11/2015
519633232^12915+12915^33232136620Hans Havermann05/2021
51972^453791+1873913136605Enzo Doria06/2016
519834166^9951+9951^34166136592Hans Havermann05/2021
5199(21*2^453740-1)/2735136588Lelio R Paula07/2015
520031102^24635+24635^31102136587Hans Havermann05/2021
5201580^49413+49413^580136550Norbert Schneider02/2019
52022^453503-2788297136519Enzo Doria11/2015
520334989^7958+7958^34989136486Hans Havermann12/2020
5204(2*10^136484+187)/9136484Robert Price06/2022
5205(5^653025)%L(653025)136475Henri Lifchitz06/2025
520631007^25158+25158^31007136452Hans Havermann11/2020
52072^453267-113827136447Enzo Doria09/2014
520832234^17085+17085^32234136435Hans Havermann12/2020
52092^453102+1877629136398Enzo Doria08/2016
521031016^24981+24981^31016136397Hans Havermann12/2020
5211(62*10^136384-791)/9136385Robert Price06/2019
521234171^9798+9798^34171136382Hans Havermann12/2020
5213(17*10^136354-113)/3136355Robert Price06/2021
521432756^14541+14541^32756136350Hans Havermann11/2020
521532205^17086+17086^32205136313Hans Havermann12/2020
5216(25*10^136303+161)/3136304Robert Price09/2019
521735337^7196+7196^35337136299Hans Havermann12/2020
5218(182*10^136291+1)/3136293Robert Price02/2020
5219(88*10^136234+83)/9136235Robert Price03/2022
522023*10^136225-7136227Robert Price02/2020
5221L(651821)136223Henri Lifchitz09/2008
522225519^30908-30908^25519136208Frank Doornink02/2024
52232^452460+77701136205Enzo Doria05/2016
52242^452440-114755136199Enzo Doria04/2015
522528625^30558-30558^28625136190Frank Doornink05/2024
522632286^16489+16489^32286136157Hans Havermann11/2020
5227(47*10^136141+493)/9136142Robert Price03/2019
522827140^30699-30699^27140136108Frank Doornink01/2024
5229Phi(199391,-5)136098Henri Lifchitz12/2025
523040392^2339+2339^40392136082Hans Havermann12/2020
52312*10^136057-43136058Robert Price04/2018
52322^451971+21563136057Enzo Doria08/2023
5233(2^451956-5)/181136051Lelio R Paula07/2015
52342^451947-22165136050Enzo Doria07/2013
5235(3^451810)%(2^451810)136008Henri Lifchitz06/2025
52362^451787-21805136002Enzo Doria07/2013
52372^451734-112817135986Enzo Doria06/2014
5238(11*2^451714+1)/75135979Lelio R Paula07/2015
52392^451705-21879135977Enzo Doria07/2013
5240(4666^37249-1)/(4666^193-1)135957Ryan Propper11/2023
52412^451560-112349135934Enzo Doria06/2014
52422^451530+45135925Lelio R Paula08/2017
524326594^30719-30719^26594135925Frank Doornink03/2024
524431622^19875+19875^31622135922Hans Havermann11/2020
5245(25*10^135906-73)/3135907Robert Price09/2019
52462^451450-21743135900Enzo Doria07/2013
5247(7*10^135879+11)/9135879Tyler Busby01/2023
524835218^7199+7199^35218135846Hans Havermann11/2020
524935661^6446+6446^35661135844Hans Havermann11/2020
5250(7*33^89453-4743239)/32135835Eric Chen12/2023


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Created by  Henri Lifchitz & Renaud Lifchitz : October, 26 2000, last modification: March, 20 2026 07:55 (Time in France)

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