PRP Records

Probable Primes Top 10000

(123792 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 (> 20000) Who ? When ?
1(2^13372531+1)/34025533Ryan Propper09/2013
2(2^13347311+1)/34017941Ryan Propper09/2013
32^9092392+402912737083Engracio Esmenda / Five or Bust02/2011
42^5146295+416931549190Engracio Esmenda / Five or Bust11/2009
52^4583176+21311379674Ben Maloney / Five or Bust09/2009
6(2^4533073+2^2266537+1)/51364591Serge Batalov03/2014
7(14^1091401+1)/151250885Paul Bourdelais03/2014
8(16^1025393+1)/171234695Paul Bourdelais08/2014
9(2^4031399+1)/31213572Tony Reix / Diepeveen-Underwood -Reix02/2010
10(7^1264699-1)/61068794Paul Bourdelais01/2014
11(2^3464473-1)/6048745082991771042896Anand Nair10/2014
1210^999999+5934991000000Peter Kaiser02/2013
132^2976221+2041857895932Makoto Morimoto09/2014
14(64*10^779465-1)/81779465Serge Batalov09/2014
15(64*10^762811-1)/9762812Serge Batalov09/2014
16(2^2327417-1)/23915387348002001700606Anand Nair08/2014
17(2^2305781-2^1152891+1)/5694109Serge Batalov01/2014
182^2249255+28433677094Ben Maloney / Five or Bust01/2009
19(15^551927+1)/16649116Paul Bourdelais07/2013
20(3^1353449-3^676725+1)/7645759Serge Batalov03/2014
21F(2904353)606974Henri Lifchitz07/2014
22(18^481147+1)/19603970Paul Bourdelais07/2011
23(2^1882787-2^941394+1)/5566775Borys Jaworski11/2012
248^615997-7^615997556301Jean-Louis Charton07/2009
25((((((((((1361^3+6)^3+80)^3+12)^3+450)^3+894)^3+3636)^3+70756)^3+97220)^3+66768)^3+300840)^3+1623568555154Serge Batalov08/2013
263^1059503-2^1059503505512Mike Oakes04/2012
27(2^1669219-2^834610+1)/5502485Borys Jaworski01/2011
28(6^608099-1)/5473193Paul Bourdelais05/2010
292^1518191+75353457022Ben Maloney / Five or Bust01/2009
30(21^328129-1)/20433858Paul Bourdelais06/2014
31(17^348259+1)/18428514Paul Bourdelais05/2014
32(10^424861-7)/3424861Leonid Durman01/2012
33138^196873-137^196873421285Jean-Louis Charton12/2009
342^1398269+131595420921Makoto Morimoto10/2013
35(3^877843-1)/2418838Paul Bourdelais07/2010
36(89*10^411590+1)/9411591Serge Batalov09/2014
37F(1968721)411439Henri Lifchitz11/2009
38(2^1347781-2^673891+1)/5405722Borys Jaworski10/2008
39(2^1304983-1)/52199321392832Tony Prest / Never Odd Or Even03/2014
4015^328574+328574^15386434Serge Batalov05/2014
41(10^380976-7)/3380976Leonid Durman01/2012
422^1257787+1447761378632Makoto Morimoto10/2013
43F(1803059)376817Henri Lifchitz06/2009
44(64*10^360173-1)/243360173Serge Batalov09/2014
452^1191375+8543358640Phil Moore06/2008
46(2^1168183-1)/54763676838381762583351639Matthias Wurtinger01/2011
47(2^1148729+2^574365+1)/5345802Borys Jaworski03/2007
48F(1636007)341905Henri Lifchitz03/2009
49(11^327001+1)/12340536Paul Bourdelais09/2013
50(2^1127239+2^563620+1)/5339333Borys Jaworski11/2006
51(3^700897+1)/4334413Paul Bourdelais04/2010
522^1091469-379369328565Enzo Doria03/2014
532^1061095-1061095319422Henri Lifchitz10/2013
54(7^371669-1)/6314096Paul Bourdelais02/2010
55(11^293831-1)/10305993Paul Bourdelais03/2010
562^1015321-1015321305643Henri Lifchitz08/2013
572^1010751-107709304267Enzo Doria03/2014
58(2^1010623-1)/12602017578957977304212Tony Prest / Never Odd Or Even02/2014
598^336419-7^336419303817Jean-Louis Charton01/2008
6010^300476+3300477Ed Trice10/2012
61314738^9+9^314738300337Anatoly F. Selevich02/2011
627^355039-6^355039300043Jean-Louis Charton05/2011
63(2^986191+1)/3296873Vincent Diepeveen06/2008
642^983620+60451296100Phil Moore03/2008
652^970141-100363292042Enzo Doria02/2014
66(17^233689+1)/18287542Paul Bourdelais09/2013
67(11*2^948635-13)/15285568Renaud Lifchitz11/2011
6810^282493-9^282493282493Jean-Louis Charton03/2007
693^591827-2^591827282374Mike Oakes08/2009
70(5*10^280710+1)/3280711Serge Batalov10/2014
71(21^210599+1)/22278457Paul Bourdelais08/2013
72757^96487-756^96487277796Jean-Louis Charton12/2012
73(5^396413-1)/4277081Paul Bourdelais06/2010
742^906594-113201272912Enzo Doria08/2014
75(7*10^271757-61)/9271757Erik Branger03/2012
762^898762-251511270555Enzo Doria12/2013
77187322*10^270343-187321270349Danilo Nitsche09/2013
7848358*10^270343-48357270348Danilo Nitsche09/2013
79(10^270343-1)/9270343Maksym Voznyy07/2007
80F(1285607)268676Henri Lifchitz11/2008
81(10^268207+1)/11268206Paul Bourdelais02/2010
82(19^209359-1)/18267718Paul Bourdelais08/2010
8311^255426+255426^11265999Serge Batalov05/2014
842^864899-113871260361Enzo Doria10/2014
85(7*10^260198-61)/9260198Erik Branger11/2011
862^863621-113833259976Enzo Doria10/2014
872^859433+494711258716Makoto Morimoto10/2013
88(11*2^857159-13)/15258031Renaud Lifchitz08/2011
892^857016-633113257988Enzo Doria12/2013
902^855732-113969257602Enzo Doria10/2014
912^853682-3911256984Enzo Doria05/2014
9211^246668-90256879Enzo Doria12/2012
932^851904-113939256449Enzo Doria10/2014
9411^246167-90256357Enzo Doria12/2012
952^850700-569049256087Enzo Doria11/2013
962^848178-140291255328Enzo Doria01/2014
9711^243796-90253888Enzo Doria12/2012
9811^242579-60252620Enzo Doria10/2012
99tau(41^28288)250924Nik Lygeros / Olivier Rozier10/2013
1002^832244-403635250531Enzo Doria01/2014
1012^829589-113653249732Enzo Doria09/2014
1022^824642-362727248242Enzo Doria12/2013
1032^815111-113857245373Enzo Doria10/2014
104846^83761-845^83761245200Jean-Louis Charton12/2012
1052^811842-113675244389Enzo Doria09/2014
1062^808621-113809243420Enzo Doria09/2014
1072^805843-113611242583Enzo Doria08/2014
1082^804277-417933242112Enzo Doria01/2014
1092^803468-269039241868Enzo Doria10/2013
1103^506233-2241535Robert Price11/2013
1112^802025-25999241434Enzo Doria10/2013
112(3^505823+3^252912+1)/7241339Serge Batalov03/2014
1132^798973-26283240515Enzo Doria10/2013
1142^796910-26001239894Enzo Doria10/2013
115(2^792061-2^396031+1)/5238434Thomas Ritschel03/2014
11611^227092-90236492Enzo Doria11/2012
11719^184650-2236122Robert Price10/2014
1182^782634-113981235597Enzo Doria11/2014
1192^780408-113453234927Enzo Doria08/2014
120(5^335429+1)/6234455Paul Bourdelais08/2010
1212^778395-113617234321Enzo Doria08/2014
122(11^223999+1)/12233270Paul Bourdelais02/2010
1232^773679-113425232901Enzo Doria08/2014
12410^232599+192489232600Patrick De Geest12/2013
12510^232599-3232599Markus Tervooren10/2010
1265^332150-18188232163Enzo Doria06/2014
1273^485977-2^485977231870Mike Oakes09/2009
128(20^177967+1)/21231540Paul Bourdelais05/2013
129(3^483611-1)/2230741Paul Bourdelais02/2010
1302^764348-113697230092Enzo Doria09/2014
1312^762841-25905229639Enzo Doria10/2013
1322^761117-113569229120Enzo Doria08/2014
1332^756839+95849227832Makoto Morimoto10/2013
1342^756773-112723227812Enzo Doria07/2014
1352^751426-764321226202Enzo Doria12/2013
136(18^180181-1)/17226176Andy Steward04/2007
1372^750740-3225996Paul Bourdelais03/2012
1382^750525-113743225931Enzo Doria09/2014
139(2^750151-1)/(429934042631*7590093831289*397764574647511*8361437834787151*17383638888678527263)225744Dario Alpern10/2014
140tau(311^16452)225560Nik Lygeros / Olivier Rozier / LR team10/2013
141234178^9+9^234178223463Anatoly F. Selevich07/2011
14211^213654-180222498Enzo Doria01/2013
14310^221631+247617221632Patrick De Geest10/2013
14410^221631-9221631Alexander Gramolin02/2011
1452^733114-24555220690Enzo Doria09/2013
1462^731891-636259220322Enzo Doria12/2013
1472^731124-25539220091Enzo Doria09/2013
1482^730547-25581219917Enzo Doria09/2013
149L(1051849)219824Renaud Lifchitz03/2009
15011^210961-240219694Enzo Doria01/2013
1512^729611-113437219635Enzo Doria08/2014
152F(1049897)219416Henri Lifchitz10/2008
153tau(311^15786)216429Nik Lygeros / Olivier Rozier / LR team10/2013
154277^88301-276^88301215674Jean-Louis Charton06/2012
155tau(373^15186)214796Nik Lygeros / Olivier Rozier / LR team10/2013
15611^206081-10^206081214612Jean-Louis Charton10/2011
1572^712603-25357214515Enzo Doria09/2013
1582^710730-396765213952Enzo Doria09/2013
1592^704577-113871212099Enzo Doria10/2014
160227^89797+2211565Lelio R Paula08/2012
1612^702194-3211382Paul Bourdelais03/2012
1622^701968-113873211314Enzo Doria10/2014
1632^701713-113779211237Enzo Doria09/2014
1642^701449-25201211158Enzo Doria09/2013
1652^701189-25423211079Enzo Doria09/2013
1662^700400+9385210842Lelio R Paula01/2014
16711^202357-1140210734Enzo Doria12/2012
168(5^300893+4^300893)/9210315Jean-Louis Charton11/2011
169(2^696343-1)/11141489/36009913139329209600Tony Prest / Never Odd Or Even02/2014
170(21^156217-1)/20206552Paul Bourdelais04/2010
1712^685578+3206380Paul Bourdelais04/2012
172326^81943-325^81943205941Jean-Louis Charton07/2012
173(2^684127-1)/23765203727205933Jens K. Andersen04/2009
1744^341233-3^341233205443Jean-Louis Charton01/2006
1752^681545+467205166Lelio R Paula11/2013
1762^678561+678561204268Henri Lifchitz05/2006
1772^678101-114043204129Enzo Doria11/2014
1782^674627-25161203083Enzo Doria09/2013
1795^289937-4^289937202658Jean-Louis Charton03/2013
1802^670539-25045201853Enzo Doria09/2013
1812^669854-113501201647Enzo Doria08/2014
1826^258413-5^258413201085Jean-Louis Charton03/2013
183(53*10^198529+1)/9198530Serge Batalov07/2010
184(18^157051-1)/17197141Paul Bourdelais03/2010
185(44*10^196684+1)/9196685Serge Batalov07/2010
1862^648619-24835195254Enzo Doria09/2013
1872^648190-24737195125Enzo Doria09/2013
18811^187185-90194934Enzo Doria09/2012
18915^165559-14^165559194713Jean-Louis Charton03/2011
190F(931517)194676Henri Lifchitz09/2008
191(5^277183+1)/6193742Paul Bourdelais07/2010
1922^642888-24965193529Enzo Doria09/2013
1932^641690-24737193168Enzo Doria09/2013
1942^640181+467192714Lelio R Paula08/2013
1952^638490-113507192205Enzo Doria08/2014
1962^636158-113627191503Enzo Doria08/2014
197(35*10^191073+1)/9191074Serge Batalov07/2010
1982^633088-113879190579Enzo Doria10/2014
1992^630108+781189682Lelio R Paula08/2013
200L(901657)188436Renaud Lifchitz11/2008
2012^624481-113611187988Enzo Doria08/2014
2022^624077-112723187866Enzo Doria07/2014
2032^623714-114035187757Enzo Doria11/2014
2042^622005-24091187243Enzo Doria08/2013
2052^620929-113203186919Enzo Doria07/2014
2062^620347-1777186744Lelio R Paula07/2013
20711^179143-4170186559Enzo Doria12/2012
208(5^266863+1)/6186529Paul Bourdelais07/2010
2092^617250+9385185811Lelio R Paula07/2013
210(3^388897+2^388897)/5185551Jean-Louis Charton09/2011
2115^265007-4^265007185232Jean-Louis Charton02/2013
212(((((((((((2^3+3)^3+30)^3+6)^3+80)^3+12)^3+450)^3+894)^3+3636)^3+70756)^3+97220)^3+66768)^3+300840185052Serge Batalov07/2013
213(9^193247+1)/10184404Paul Bourdelais02/2010
2142^611628-24537184119Enzo Doria08/2013
215(28*10^183760-1)/9183761Serge Batalov10/2014
2162^610401+1277183750Lelio R Paula07/2013
21711^176176-240183469Enzo Doria11/2012
2182^608965-113989183317Enzo Doria10/2014
2192^606560-357182593Enzo Doria05/2014
220(20^140053+1)/21182212Paul Bourdelais04/2010
2212^605174-112751182176Enzo Doria06/2014
22211^174145-360181354Enzo Doria10/2012
2232^602351-396765181326Enzo Doria08/2013
2242^601957-113833181208Enzo Doria09/2014
22566^99581-65^99581181193Robert Price09/2013
2262^601023-113851180926Enzo Doria10/2014
2272^599702-369885180529Enzo Doria11/2013
228Gamma-Prime(179849)179849Eric W. Weisstein06/2011
2292^596684-113939179620Enzo Doria10/2014
2303^375887-112696179344Enzo Doria07/2014
231(2^148330+1)^4-2178608Cletus Emmanuel12/2003
232(18^142031-1)/17178287Paul Bourdelais03/2010
2332^590762-396765177838Enzo Doria08/2013
234ReverseConsecutiveIntegerPrime(37765)177719Eric W. Weisstein04/2010
2352^588912-113519177281Enzo Doria08/2014
2362^587560-113699176874Enzo Doria09/2014
2375^252763-12862176674Enzo Doria05/2014
2382^585832-112799176354Enzo Doria07/2014
23910^175608+2971175609Mike Oakes05/2010
24010^175608-55829175608Patrick De Geest09/2013
2412^582860-23829175459Enzo Doria08/2013
2422^582670-23913175402Enzo Doria08/2013
2432^580528-114035174757Enzo Doria11/2014
2442^578583-113917174171Enzo Doria10/2014
245(2^576551-1)/4612409/64758208321/242584327930759173528Dario Alpern06/2014
2462^576016-113919173399Enzo Doria11/2014
2472^575196-114053173152Enzo Doria11/2014
2489^180804+2172531Robert Price08/2014
2493^361608+2172531Robert Price08/2014
2505^246497-4^246497172295Jean-Louis Charton11/2008


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Created by  Henri Lifchitz & Renaud Lifchitz : October, 26 2000, last modification: November, 22 2014 19:45 (Time in France)

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