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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Rank |
Probable prime |
Digits (> 50000) |
Who ? |
When ? |
6001 | (2^376967+258)/2 | 113479 | Stefano Morozzi | 09/2020 |
6002 | (29*10^113468-17)/3 | 113469 | Robert Price | 09/2019 |
6003 | 35^73477-34^73477 | 113454 | Robert Price | 05/2012 |
6004 | (14*10^113451-89)/3 | 113452 | Robert Price | 05/2020 |
6005 | 2^376790+27 | 113426 | Lelio R Paula | 03/2013 |
6006 | 2^376786-112701 | 113424 | Enzo Doria | 06/2014 |
6007 | 2^376731+21 | 113408 | Lelio R Paula | 03/2013 |
6008 | 9*10^113394-73 | 113395 | Robert Price | 01/2021 |
6009 | 29660^6651+6651^29660 | 113387 | Hans Havermann | 01/2021 |
6011 | 2^376634+1871245 | 113379 | Enzo Doria | 05/2016 |
6010 | (4^188318+17)/3 | 113379 | Robert Price | 02/2017 |
6012 | E(29532)/492842728006750534663978950979381235 | 113367 | Thomas Ritschel | 01/2021 |
6013 | 2^376576-344369 | 113361 | Enzo Doria | 07/2015 |
6014 | 2^376549-4543 | 113353 | Yves Minet | 03/2019 |
6015 | (17*2^376526-1)/223 | 113345 | Lelio R Paula | 03/2014 |
6016 | (27*2^376441-1)/811 | 113319 | Lelio R Paula | 03/2014 |
6017 | (2^376350+3538)/2 | 113293 | Stefano Morozzi | 09/2020 |
6018 | 27265^14272+14272^27265 | 113273 | Hans Havermann | 02/2021 |
6019 | 32174^3315+3315^32174 | 113269 | Hans Havermann | 02/2021 |
6020 | (2*10^113248+73)/3 | 113248 | Robert Price | 09/2020 |
6021 | 2^376128-21237 | 113226 | Enzo Doria | 06/2013 |
6022 | 5*10^113224-81 | 113225 | Robert Price | 01/2019 |
6023 | 10^113220+51409 | 113221 | Patrick De Geest | 02/2021 |
6025 | 10^113220-1000001 | 113220 | Robert Price | 08/2020 |
6024 | 10^113220-61779 | 113220 | Patrick De Geest | 02/2021 |
6026 | (2^376102+1578)/2 | 113218 | Stefano Morozzi | 09/2020 |
6027 | (2^375996+3102)/2 | 113186 | Stefano Morozzi | 09/2020 |
6028 | 37258^1091+1091^37258 | 113184 | Hans Havermann | 02/2021 |
6029 | (94*10^113176+11)/3 | 113178 | Robert Price | 04/2020 |
6030 | (46*10^113162+521)/9 | 113163 | Robert Price | 02/2019 |
6031 | (2^375885+3614)/2 | 113153 | Stefano Morozzi | 09/2020 |
6032 | (2^375873+2006)/2 | 113149 | Stefano Morozzi | 09/2020 |
6033 | 3*10^113137+23 | 113138 | Robert Price | 03/2022 |
6034 | (8*10^113135-269)/9 | 113135 | Robert Price | 09/2021 |
6035 | (2^375726+694)/2 | 113105 | Stefano Morozzi | 09/2020 |
6036 | 26050^21959+21959^26050 | 113100 | Hans Havermann | 02/2021 |
6037 | 2^375638-1787171 | 113079 | Enzo Doria | 03/2016 |
6038 | (2^375563+2178)/2 | 113056 | Stefano Morozzi | 09/2020 |
6039 | 2^375537+4847 | 113048 | Yves Minet | 02/2011 |
6040 | (17^91837+16^91837)/33 | 113000 | Robert Price | 08/2013 |
6041 | 5*F(270343)*(F(270343)+1)+1 | 112997 | Serge Batalov | 04/2015 |
6042 | 2^375350-3221 | 112992 | Yves Minet | 07/2011 |
6043 | (13*2^375306+1)/7 | 112979 | Lelio R Paula | 03/2014 |
6044 | 2^375305+76757 | 112979 | Enzo Doria | 05/2016 |
6045 | 2^375258+1874989 | 112964 | Enzo Doria | 07/2016 |
6046 | (29^77237-1)/28 | 112950 | Robert Price | 04/2012 |
6047 | 26620^17483+17483^26620 | 112939 | Hans Havermann | 01/2021 |
6048 | 2^375154+74959 | 112933 | Enzo Doria | 04/2016 |
6049 | (266*10^112930-17)/3 | 112932 | Robert Price | 07/2020 |
6050 | (2^375134+778)/2 | 112927 | Stefano Morozzi | 09/2020 |
6051 | (85*10^112919+293)/9 | 112920 | Robert Price | 12/2019 |
6052 | 29412^6899+6899^29412 | 112907 | Hans Havermann | 02/2021 |
6053 | (191*10^112903-17)/3 | 112905 | Robert Price | 11/2021 |
6054 | (2^375022+1210)/2 | 112893 | Stefano Morozzi | 09/2020 |
6055 | 25992^22039+22039^25992 | 112889 | Hans Havermann | 02/2021 |
6056 | 2^374993-2787163 | 112885 | Enzo Doria | 11/2015 |
6057 | (697*10^112869+23)/9 | 112871 | Robert Price | 04/2021 |
6058 | (19*10^112851+377)/9 | 112852 | Alfred Reich | 11/2022 |
6059 | 30420^5111+5111^30420 | 112813 | Hans Havermann | 02/2021 |
6060 | 13699^27268+27268^13699 | 112800 | Norbert Schneider | 12/2020 |
6061 | 123^53970+2 | 112793 | Lelio R Paula | 06/2013 |
6062 | 12308*27^78796+23 | 112790 | Eric Chen | 07/2023 |
6063 | 28942^7887+7887^28942 | 112785 | Hans Havermann | 01/2021 |
6064 | 2^374640-4685 | 112778 | Yves Minet | 05/2019 |
6065 | 12^104501-11 | 112776 | Riley Fisher | 12/2023 |
6066 | 57290^93+93^57290 | 112775 | Hans Havermann | 01/2021 |
6067 | 13608^27277-27277^13608 | 112758 | Norbert Schneider | 12/2022 |
6068 | (2^374556+682)/2 | 112753 | Stefano Morozzi | 09/2020 |
6069 | p(22852)#/2+512 | 112745 | Robert Price | 05/2017 |
6070 | (11*10^112742-131)/3 | 112743 | Robert Price | 09/2018 |
6071 | 2^374441-21049 | 112718 | Enzo Doria | 06/2013 |
6072 | 4*10^112706-93 | 112707 | Robert Price | 07/2020 |
6073 | (2^374321+1)/3 | 112682 | H.&R. Lifchitz | 12/2000 |
6074 | (2^374213+1766)/2 | 112650 | Stefano Morozzi | 09/2020 |
6075 | (2^374094+2674)/2 | 112614 | Stefano Morozzi | 09/2020 |
6076 | (13^101089-1)/12 | 112607 | Paul Bourdelais | 03/2010 |
6077 | 3^236011-8828 | 112606 | Enzo Doria | 05/2014 |
6078 | 31854^3427+3427^31854 | 112602 | Hans Havermann | 02/2021 |
6079 | (85*10^112530-373)/9 | 112531 | Robert Price | 05/2021 |
6080 | (2^373748+1090)/2 | 112510 | Stefano Morozzi | 09/2020 |
6081 | (2^373727+1806)/2 | 112503 | Stefano Morozzi | 01/2021 |
6082 | 27618^11821+11821^27618 | 112479 | Hans Havermann | 01/2021 |
6083 | U(602921)/4823369 | 112479 | Serge Batalov | 07/2024 |
6084 | 26343^18580+18580^26343 | 112460 | Hans Havermann | 01/2021 |
6085 | 39^70666+2 | 112435 | Lelio R Paula | 11/2013 |
6086 | (134*10^112400+7)/3 | 112402 | Robert Price | 02/2020 |
6087 | (2^373365+326)/2 | 112394 | Stefano Morozzi | 09/2020 |
6088 | (2^373350-7)/3 | 112390 | Lelio R Paula | 03/2014 |
6089 | 2^373306-1840931 | 112377 | Enzo Doria | 06/2015 |
6090 | 8*10^112371-37 | 112372 | Robert Price | 03/2022 |
6091 | (2^373262+270)/2 | 112363 | Stefano Morozzi | 09/2020 |
6092 | 6*10^112359-79 | 112360 | Robert Price | 03/2022 |
6093 | 34409^1842+1842^34409 | 112356 | Hans Havermann | 02/2021 |
6094 | (142*10^112352-7)/9 | 112354 | Robert Price | 12/2019 |
6095 | 25580^24633+24633^25580 | 112336 | Hans Havermann | 01/2021 |
6096 | 2^373117+1872107 | 112320 | Enzo Doria | 05/2016 |
6097 | (2^373083+2226)/2 | 112309 | Stefano Morozzi | 01/2021 |
6098 | (35*10^112308+37)/9 | 112309 | Robert Price | 05/2022 |
6099 | 27963^10376+10376^27963 | 112301 | Hans Havermann | 01/2021 |
6100 | 2^373040+2792761 | 112297 | Enzo Doria | 03/2016 |
6101 | (156^51203-1)/155 | 112293 | Anonymous | 06/2024 |
6102 | EPrime(112280) | 112280 | Eric W. Weisstein | 10/2010 |
6103 | 2^372950+7 | 112270 | Lelio R Paula | 03/2013 |
6104 | 2^372945+1872167 | 112268 | Enzo Doria | 05/2016 |
6105 | 36274^1243+1243^36274 | 112249 | Hans Havermann | 02/2021 |
6106 | (55*10^112246+629)/9 | 112247 | Robert Price | 01/2022 |
6107 | (2^372872+3798)/2 | 112246 | Stefano Morozzi | 02/2021 |
6108 | 25513^25060+25060^25513 | 112232 | Hans Havermann | 02/2021 |
6109 | (53*10^112229-611)/9 | 112230 | Robert Price | 02/2022 |
6110 | (2^372754+3094)/2 | 112210 | Stefano Morozzi | 09/2020 |
6111 | 6*10^112208+43 | 112209 | Robert Price | 07/2020 |
6112 | (2^372728+3058)/2 | 112203 | Stefano Morozzi | 09/2020 |
6113 | 32061^3158+3158^32061 | 112195 | Hans Havermann | 02/2021 |
6114 | 2^372695+72113 | 112193 | Enzo Doria | 04/2016 |
6115 | 2^372689-2563 | 112191 | Yves Minet | 07/2014 |
6116 | 2^372638-1859441 | 112176 | Enzo Doria | 03/2016 |
6117 | 3^235074-113056 | 112159 | Enzo Doria | 07/2014 |
6118 | -E(29242)/489848365125303139750087 | 112140 | Thomas Ritschel | 01/2021 |
6119 | (2^372514+1822)/2 | 112138 | Stefano Morozzi | 02/2021 |
6120 | 29468^6387+6387^29468 | 112135 | Hans Havermann | 02/2021 |
6121 | (2^372428+3742)/2 | 112112 | Stefano Morozzi | 01/2021 |
6122 | 25375^25454-25454^25375 | 112110 | Norbert Schneider | 01/2021 |
6123 | 131^52949-130 | 112108 | Norbert Schneider | 02/2019 |
6124 | (91*10^112098-1)/9 | 112100 | Robert Price | 04/2015 |
6125 | (68*10^112087-149)/9 | 112088 | Robert Price | 07/2022 |
6126 | 2^372314+212419 | 112078 | Enzo Doria | 08/2023 |
6127 | 2^372310-85061 | 112077 | Paul Bourdelais | 02/2012 |
6128 | (10^112067+53)/9 | 112067 | Serge Batalov | 07/2015 |
6129 | (2^372237+2082)/2 | 112055 | Stefano Morozzi | 09/2020 |
6130 | 75^59760+2 | 112054 | Lelio R Paula | 08/2013 |
6131 | (2^372200+1710)/2 | 112044 | Stefano Morozzi | 09/2020 |
6132 | (10^112048+7)/8747/373157 | 112039 | Alfred Reich | 06/2021 |
6133 | (2^372181+2250)/2 | 112038 | Stefano Morozzi | 01/2021 |
6134 | F(536233)/825798821/1102495049/5641839306317 | 112036 | Serge Batalov | 07/2024 |
6135 | (2^372161+2574)/2 | 112032 | Stefano Morozzi | 09/2020 |
6136 | 8*10^112018-49 | 112019 | Robert Price | 08/2019 |
6138 | 2^372108+74221 | 112016 | Enzo Doria | 04/2016 |
6137 | (2^372109+2046)/2 | 112016 | Stefano Morozzi | 09/2020 |
6139 | 8*10^112011-73 | 112012 | Robert Price | 01/2022 |
6140 | (184*10^112007-1)/3 | 112009 | Robert Price | 02/2020 |
6141 | 5*10^112003+81 | 112004 | Robert Price | 03/2019 |
6142 | 215^48018+48018^215 | 112000 | Norbert Schneider | 10/2018 |
6143 | 25549^24148+24148^25549 | 111979 | Hans Havermann | 02/2021 |
6144 | 2^371970-459491 | 111975 | Enzo Doria | 05/2015 |
6145 | 41^69427-40^69427 | 111971 | Robert Price | 07/2012 |
6146 | (2^371782+358)/2 | 111918 | Stefano Morozzi | 01/2021 |
6147 | 15*25^80056+446 | 111915 | Eric Chen | 10/2023 |
6148 | (34*10^111902-547)/9 | 111903 | Robert Price | 03/2021 |
6149 | (10^111902+71)/9 | 111902 | Serge Batalov | 07/2015 |
6150 | (2^371625+1610)/2 | 111870 | Stefano Morozzi | 09/2020 |
6151 | 29080^7027+7027^29080 | 111865 | Hans Havermann | 01/2021 |
6152 | 31307^3730+3730^31307 | 111820 | Hans Havermann | 02/2021 |
6153 | 2^371440-112865 | 111815 | Enzo Doria | 06/2014 |
6154 | 2^371426-459161 | 111811 | Enzo Doria | 05/2015 |
6155 | 25768^21771+21771^25768 | 111779 | Hans Havermann | 02/2021 |
6156 | 28022^9747+9747^28022 | 111777 | Hans Havermann | 02/2021 |
6157 | (94*10^111770+11)/3 | 111772 | Robert Price | 04/2020 |
6158 | 2^371276-461267 | 111766 | Enzo Doria | 07/2015 |
6159 | 6*10^111760+43 | 111761 | Robert Price | 07/2020 |
6160 | 98079!4-1024 | 111747 | Robert Price | 11/2019 |
6161 | (2^371186+3162)/2 | 111738 | Stefano Morozzi | 09/2020 |
6162 | 10^(2*55862+1)-4*10^55862-1 | 111725 | Robert Price | 07/2023 |
6163 | 2^371098-113261 | 111712 | Enzo Doria | 07/2014 |
6164 | (7*10^111706-61)/9 | 111706 | Erik Branger | 01/2011 |
6165 | 2^371044+1869391 | 111696 | Enzo Doria | 05/2016 |
6166 | 26310^17581+17581^26310 | 111688 | Hans Havermann | 01/2021 |
6167 | 88^57416+87 | 111645 | Norbert Schneider | 11/2015 |
6168 | 2^370829-109693 | 111631 | Enzo Doria | 04/2014 |
6169 | 15^94906-2 | 111619 | Lelio R Paula | 11/2013 |
6170 | 25835^20904+20904^25835 | 111614 | Hans Havermann | 02/2021 |
6171 | (2^370726+1198)/2 | 111600 | Stefano Morozzi | 09/2020 |
6172 | 27758^10479+10479^27758 | 111597 | Hans Havermann | 02/2021 |
6173 | 2^370695-4627 | 111591 | Yves Minet | 05/2019 |
6174 | 7*10^111579-87 | 111580 | Robert Price | 06/2020 |
6175 | 2^370643-37 | 111575 | Yves Minet | 01/2012 |
6176 | (2^370655-5)/2439 | 111575 | Lelio R Paula | 03/2014 |
6177 | 2^370610-3911 | 111565 | Yves Minet | 04/2017 |
6178 | (154*10^111549+17)/9 | 111551 | Robert Price | 06/2022 |
6179 | 26200^18097+18097^26200 | 111550 | Hans Havermann | 01/2021 |
6180 | 286^45405+45405^286 | 111532 | Norbert Schneider | 04/2015 |
6181 | 4*5^159563-9 | 111531 | Lelio R Paula | 11/2014 |
6182 | 5*10^111528-21 | 111529 | Robert Price | 12/2021 |
6183 | (4^185225+23)/3 | 111517 | Robert Price | 10/2018 |
6184 | 2^370393-2797093 | 111500 | Enzo Doria | 03/2016 |
6185 | (21*2^370382-1)/629 | 111495 | Lelio R Paula | 03/2014 |
6186 | (2^370371+554)/2 | 111493 | Stefano Morozzi | 09/2020 |
6187 | 6^143273-5 | 111489 | Paul Bourdelais | 01/2021 |
6188 | 2^370292-2791979 | 111469 | Enzo Doria | 03/2016 |
6189 | (14*10^111443-11)/3 | 111444 | Robert Price | 08/2022 |
6190 | 2^370177-461551 | 111435 | Enzo Doria | 07/2015 |
6191 | (2^370169+1706)/2 | 111432 | Stefano Morozzi | 09/2020 |
6192 | 109^54683-108 | 111413 | Norbert Schneider | 02/2017 |
6193 | (83*10^111406-173)/9 | 111407 | Robert Price | 04/2021 |
6194 | (2^370043+1010)/2 | 111394 | Stefano Morozzi | 09/2020 |
6195 | 32961^2396+2396^32961 | 111392 | Hans Havermann | 10/2020 |
6196 | numbpart(10^10+76282) | 111391 | Serge Batalov | 04/2015 |
6197 | (19*10^111385+11)/3 | 111386 | Robert Price | 07/2023 |
6198 | (23*10^111380-29)/3 | 111381 | Robert Price | 03/2022 |
6199 | 2^369974+733 | 111374 | Lelio R Paula | 05/2013 |
6200 | 121^53470+120 | 111367 | Norbert Schneider | 10/2018 |
6201 | 2^369915-286267 | 111356 | Enzo Doria | 07/2015 |
6202 | (62*10^111347-629)/9 | 111348 | Robert Price | 07/2021 |
6203 | 2^369855-1615 | 111338 | Lelio R Paula | 05/2017 |
6204 | 7*10^111325+3 | 111326 | Robert Price | 08/2015 |
6205 | 51^65176+2 | 111293 | Lelio R Paula | 08/2013 |
6206 | 2^369643-1865767 | 111274 | Enzo Doria | 03/2016 |
6207 | 2^369603+885 | 111262 | Lelio R Paula | 05/2017 |
6208 | 25555^22564+22564^25555 | 111252 | Hans Havermann | 10/2020 |
6209 | F(532391)/89441689/1425422598617 | 111243 | Serge Batalov | 07/2024 |
6210 | L(532277) | 111240 | Renaud Lifchitz | 03/2004 |
6211 | 105^55033-2 | 111233 | Lelio R Paula | 10/2017 |
6212 | (35*10^111232-737)/9 | 111233 | Robert Price | 07/2018 |
6213 | 26970^13307+13307^26970 | 111227 | Hans Havermann | 10/2020 |
6214 | 25419^23716+23716^25419 | 111210 | Hans Havermann | 10/2020 |
6215 | 9*10^111201-29 | 111202 | Robert Price | 09/2019 |
6216 | 2^369392+29835 | 111199 | Lelio R Paula | 05/2017 |
6217 | 3^233059+16 | 111198 | Robert Price | 03/2020 |
6218 | 2^369354-3413 | 111187 | Yves Minet | 12/2016 |
6219 | 2^369296-27 | 111170 | Lelio R Paula | 02/2013 |
6220 | (2468^40960+1)/(2468^8192+1) | 111161 | Martin Hopf | 08/2024 |
6221 | 2^369239-109837 | 111153 | Enzo Doria | 05/2014 |
6222 | 2^369224-291839 | 111148 | Enzo Doria | 07/2015 |
6223 | 2^369216+2798881 | 111146 | Enzo Doria | 04/2016 |
6224 | 26842^13817+13817^26842 | 111137 | Hans Havermann | 11/2020 |
6225 | (5*10^111119-191)/3 | 111120 | Robert Price | 05/2021 |
6226 | (29*10^111112-23)/3 | 111113 | Robert Price | 03/2022 |
6227 | 10^111111+163849 | 111112 | Patrick De Geest | 03/2017 |
6228 | 10^111111-312911 | 111111 | Patrick De Geest | 03/2017 |
6229 | 2^369092-216923 | 111108 | Enzo Doria | 05/2014 |
6230 | 2^369081-55 | 111105 | Lelio R Paula | 02/2013 |
6231 | (2^369047+3618)/2 | 111094 | Stefano Morozzi | 09/2020 |
6232 | 88^57124-87 | 111077 | Norbert Schneider | 11/2015 |
6233 | 2^368980+753 | 111075 | Lelio R Paula | 05/2013 |
6234 | 2^368946-3623 | 111064 | Yves Minet | 03/2017 |
6235 | 2^368929+29835 | 111059 | Lelio R Paula | 05/2017 |
6236 | 4^184463-3^184463 | 111058 | Jean-Louis Charton | 12/2004 |
6237 | 111^54298+110 | 111057 | Norbert Schneider | 04/2017 |
6238 | (4*10^111032-7)/3 | 111033 | Ray Chandler | 04/2011 |
6239 | (29*10^111020-41)/3 | 111021 | Tyler Busby | 03/2024 |
6240 | 35799^1262+1262^35799 | 111015 | Hans Havermann | 10/2020 |
6241 | (298*10^111004+11)/3 | 111006 | Robert Price | 11/2020 |
6242 | 27648^10349+10349^27648 | 111004 | Hans Havermann | 11/2020 |
6243 | 28899^6932+6932^28899 | 110997 | Hans Havermann | 11/2020 |
6244 | (749^38809+1)/(749^197+1) | 110990 | Martin Hopf | 11/2023 |
6245 | 2^368641-460303 | 110972 | Enzo Doria | 06/2015 |
6246 | 2^368619-109087 | 110966 | Enzo Doria | 04/2014 |
6247 | (74*10^110961+313)/9 | 110962 | Robert Price | 06/2019 |
6248 | 25258^24711+24711^25258 | 110956 | Hans Havermann | 11/2020 |
6249 | (2^368539+1290)/2 | 110941 | Stefano Morozzi | 01/2021 |
6250 | 3*2^368489+7 | 110927 | Lelio R Paula | 09/2014 |