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 ? |
7001 | 222748^3+3^222748 | 106278 | Anatoly F. Selevich | 12/2010 |
7002 | (9179*2^353019-1)/9 | 106273 | Lelio R Paula | 05/2015 |
7003 | 2^353025+72257 | 106272 | Enzo Doria | 04/2016 |
7006 | 2^352932-20345 | 106244 | Enzo Doria | 06/2013 |
7004 | (2^353011-3)/745325861246794515484535 | 106244 | Lelio R Paula | 12/2013 |
7005 | 25628^13983+13983^25628 | 106244 | Hans Havermann | 10/2020 |
7007 | 2^352883-187 | 106229 | Lelio R Paula | 10/2011 |
7008 | 20^81649-19^81649 | 106228 | Jean-Louis Charton | 03/2011 |
7009 | (55*10^106222+377)/9 | 106223 | Robert Price | 02/2019 |
7010 | 2^352814-131 | 106208 | Lelio R Paula | 10/2011 |
7011 | 2^352752+73951 | 106189 | Enzo Doria | 04/2016 |
7012 | 11876*25^75945+357 | 106171 | Eric Chen | 10/2023 |
7013 | 6^136434+5 | 106167 | Lelio R Paula | 11/2014 |
7014 | 25296^15737+15737^25296 | 106166 | Hans Havermann | 09/2020 |
7015 | 8*10^106157-13 | 106158 | Robert Price | 08/2019 |
7016 | 2^352641+225677 | 106156 | Enzo Doria | 08/2024 |
7017 | 7*5^151872-8 | 106155 | Lelio R Paula | 11/2014 |
7018 | 105^52520-2 | 106153 | Lelio R Paula | 10/2017 |
7019 | (23*10^106152-29)/3 | 106153 | Robert Price | 03/2022 |
7020 | 2^352601-1604809 | 106144 | Enzo Doria | 05/2015 |
7021 | 12^98353-43 | 106141 | Lelio R Paula | 02/2017 |
7022 | 2^352585-18901 | 106139 | Enzo Doria | 05/2013 |
7023 | 26363^10614+10614^26363 | 106135 | Hans Havermann | 09/2020 |
7024 | (2^352554-3)/193 | 106128 | Lelio R Paula | 12/2013 |
7025 | 2^352540+15015 | 106126 | Lelio R Paula | 01/2017 |
7026 | 25068^17119+17119^25068 | 106125 | Hans Havermann | 09/2020 |
7027 | 2^352524-3149 | 106121 | Yves Minet | 10/2014 |
7028 | (7*10^106119-67)/3 | 106120 | Robert Price | 10/2021 |
7029 | 2^352486-1858781 | 106109 | Enzo Doria | 04/2016 |
7030 | 2^352444+12705 | 106097 | Lelio R Paula | 01/2017 |
7031 | 28561^5182+5182^28561 | 106090 | Hans Havermann | 10/2020 |
7032 | (182*10^106083+43)/9 | 106085 | Robert Price | 02/2020 |
7033 | (266*10^106066+1)/3 | 106068 | Robert Price | 04/2020 |
7034 | (7*10^106066-187)/9 | 106066 | Tyler Busby | 01/2023 |
7035 | 2^352228-18953 | 106032 | Enzo Doria | 05/2013 |
7036 | (2^352223+1118)/2 | 106030 | Stefano Morozzi | 09/2020 |
7037 | (2^352212+2250)/2 | 106027 | Stefano Morozzi | 01/2021 |
7038 | (2^352136+2638)/2 | 106004 | Stefano Morozzi | 09/2020 |
7039 | 2^352107+1872533 | 105995 | Enzo Doria | 05/2016 |
7040 | (2^352096+2086)/2 | 105992 | Stefano Morozzi | 09/2020 |
7041 | 2^352066-2591 | 105983 | Yves Minet | 07/2014 |
7042 | 2^352030+715 | 105972 | Lelio R Paula | 10/2011 |
7043 | 9*6^136176-5 | 105967 | Lelio R Paula | 11/2014 |
7044 | 17099*2^351991+58329 | 105965 | Paul Vanderveen | 12/2017 |
7045 | 122^50789-50789^122 | 105965 | Norman Luhn | 09/2024 |
7046 | 28582^5097+5097^28582 | 105963 | Hans Havermann | 09/2020 |
7047 | 155^48377+2 | 105962 | Lelio R Paula | 08/2013 |
7048 | (23*10^105944-119)/3 | 105945 | Robert Price | 07/2021 |
7049 | 2^351865+1869707 | 105922 | Enzo Doria | 05/2016 |
7050 | 24974^17427+17427^24974 | 105921 | Hans Havermann | 09/2020 |
7051 | 25163^16194+16194^25163 | 105920 | Hans Havermann | 09/2020 |
7052 | 2^351831+23 | 105912 | Lelio R Paula | 10/2011 |
7053 | (2^351818+3798)/2 | 105908 | Stefano Morozzi | 02/2021 |
7054 | 9*2^351784-5 | 105899 | Lelio R Paula | 09/2014 |
7055 | (2^351776+2766)/2 | 105895 | Stefano Morozzi | 01/2021 |
7056 | (85*10^105881+203)/9 | 105882 | Robert Price | 09/2020 |
7057 | 2^351671-112387 | 105864 | Enzo Doria | 06/2014 |
7058 | 2^351669-109501 | 105863 | Enzo Doria | 04/2014 |
7059 | 2^351644+74731 | 105856 | Enzo Doria | 04/2016 |
7060 | 13^95025-42 | 105853 | Lelio R Paula | 12/2016 |
7061 | 2^351599+15015 | 105842 | Lelio R Paula | 01/2017 |
7062 | 19^82763+90 | 105834 | Lelio R Paula | 01/2017 |
7063 | (205*10^105831-1)/3 | 105833 | Robert Price | 11/2021 |
7064 | 26050^11551+11551^26050 | 105832 | Hans Havermann | 09/2020 |
7065 | (9179*2^351540-1)/221 | 105826 | Lelio R Paula | 05/2015 |
7066 | 20^81329-51 | 105812 | Lelio R Paula | 01/2017 |
7067 | (5*10^105811+211)/9 | 105811 | Robert Price | 02/2018 |
7068 | 2^351483+28425 | 105807 | Lelio R Paula | 01/2017 |
7069 | 25231^15610+15610^25231 | 105804 | Hans Havermann | 09/2020 |
7070 | 15^89960+86 | 105802 | Lelio R Paula | 02/2017 |
7071 | 2^351460-17289 | 105801 | Enzo Doria | 05/2013 |
7072 | 19^82735+22 | 105798 | Lelio R Paula | 01/2017 |
7073 | 2^351435-109077 | 105793 | Enzo Doria | 04/2014 |
7074 | 2^351393+1089 | 105780 | Lelio R Paula | 01/2017 |
7075 | 2^351364+72631 | 105772 | Enzo Doria | 04/2016 |
7076 | (2^351333+3626)/2 | 105762 | Stefano Morozzi | 09/2020 |
7077 | 26818^8783+8783^26818 | 105761 | Hans Havermann | 09/2020 |
7080 | 2^351305+1872467 | 105754 | Enzo Doria | 05/2016 |
7079 | 3^221649+16 | 105754 | Lelio R Paula | 11/2016 |
7078 | 32511^1790+1790^32511 | 105754 | Hans Havermann | 09/2020 |
7081 | 8*3^221637-5 | 105749 | Lelio R Paula | 09/2014 |
7082 | 2^351279-2780449 | 105746 | Enzo Doria | 03/2016 |
7083 | (2^351263+3198)/2 | 105741 | Stefano Morozzi | 09/2020 |
7084 | 15^89903-26 | 105735 | Lelio R Paula | 02/2017 |
7086 | 2^351213-73 | 105726 | Lelio R Paula | 10/2011 |
7085 | (2^351214+1210)/2 | 105726 | Stefano Morozzi | 09/2020 |
7087 | 2^351192-4589 | 105720 | Yves Minet | 07/2011 |
7088 | 20^81250-33 | 105709 | Lelio R Paula | 12/2016 |
7089 | (2^351133+3530)/2 | 105702 | Stefano Morozzi | 09/2020 |
7090 | (2^351103+534)/2 | 105693 | Stefano Morozzi | 09/2020 |
7091 | 2^351076-113159 | 105685 | Enzo Doria | 07/2014 |
7092 | 93^53688-2 | 105684 | Lelio R Paula | 09/2013 |
7093 | 2^351060-4559 | 105680 | Yves Minet | 07/2011 |
7094 | ((10^52836-1)*10000/9+5927)*10^52836+(10^52836-1)/9 | 105676 | Hans Havermann | 08/2019 |
7095 | 11^101473-750 | 105674 | Enzo Doria | 11/2012 |
7096 | 3*5^151181-8 | 105672 | Lelio R Paula | 11/2014 |
7097 | 15^89831-34 | 105650 | Lelio R Paula | 02/2017 |
7099 | 11^101448-360 | 105648 | Enzo Doria | 08/2012 |
7098 | 3*7^125011+4 | 105648 | Lelio R Paula | 11/2014 |
7100 | 2^350943-113269 | 105645 | Enzo Doria | 07/2014 |
7101 | 2*10^105636-91 | 105637 | Robert Price | 04/2020 |
7102 | 24231^22880+22880^24231 | 105634 | Hans Havermann | 09/2020 |
7103 | 35296^983+983^35296 | 105626 | Hans Havermann | 09/2020 |
7104 | 2^350868-19725 | 105622 | Enzo Doria | 06/2013 |
7105 | 2^350858-59291 | 105619 | Enzo Doria | 10/2015 |
7106 | V(758484)/1516967/19720583 | 105618 | Serge Batalov | 07/2024 |
7107 | 2^350851+135 | 105617 | Lelio R Paula | 10/2011 |
7108 | 2^350841-741 | 105614 | Lelio R Paula | 01/2017 |
7109 | 3*10^105582+77 | 105583 | Robert Price | 09/2018 |
7110 | 24915^17284+17284^24915 | 105581 | Hans Havermann | 09/2020 |
7111 | (5*10^105576-53)/3 | 105577 | Robert Price | 09/2020 |
7112 | 8*10^105571+3 | 105572 | Robert Price | 08/2015 |
7113 | 2^350674-78557 | 105564 | Jorge Menendez | 03/2018 |
7114 | 2*5^151026-3 | 105563 | Lelio R Paula | 11/2014 |
7115 | (2^350702+5)/34264674063 | 105562 | Lelio R Paula | 12/2013 |
7116 | 6^135647-5^135647 | 105554 | Jean-Louis Charton | 02/2009 |
7117 | 3^221211+236 | 105545 | Lelio R Paula | 11/2016 |
7118 | (32*10^105530-77)/9 | 105531 | Robert Price | 06/2018 |
7119 | 10^105515+33 | 105516 | Lelio R Paula | 11/2016 |
7120 | 24644^19125+19125^24644 | 105516 | Hans Havermann | 10/2020 |
7121 | 10^105515-41033 | 105515 | Patrick De Geest | 12/2016 |
7122 | (29*2^350473-1)/267927 | 105499 | Lelio R Paula | 03/2014 |
7123 | 2^350455-430567 | 105498 | Harrison Mesh | 06/2022 |
7124 | 17^85732-72 | 105489 | Lelio R Paula | 01/2017 |
7125 | (2^350399+3618)/2 | 105481 | Stefano Morozzi | 09/2020 |
7126 | (2^350379+1010)/2 | 105475 | Stefano Morozzi | 09/2020 |
7127 | 2^350356+24241 | 105468 | Enzo Doria | 10/2023 |
7128 | 25233^15118+15118^25233 | 105462 | Hans Havermann | 09/2020 |
7129 | 26261^10366+10366^26261 | 105454 | Hans Havermann | 09/2020 |
7130 | 2^350307-110329 | 105453 | Enzo Doria | 05/2014 |
7131 | 2^350253-20365 | 105437 | Enzo Doria | 06/2013 |
7132 | (3*29^72089-1075)/4 | 105423 | Curtis Bright | 05/2015 |
7133 | (2^350187+2658)/2 | 105417 | Stefano Morozzi | 09/2020 |
7134 | 4*10^105415-69 | 105416 | Robert Price | 01/2022 |
7135 | 21^79725-22 | 105414 | Anonymous | 09/2024 |
7136 | (22*10^105407+179)/3 | 105408 | Robert Price | 02/2022 |
7137 | 2^350139-109009 | 105403 | Enzo Doria | 04/2014 |
7138 | (2^350129+3026)/2 | 105400 | Stefano Morozzi | 09/2020 |
7139 | (2^350097+2070)/2 | 105390 | Stefano Morozzi | 09/2020 |
7140 | 3*5^150763+4 | 105380 | Lelio R Paula | 11/2014 |
7141 | 12^97643+91 | 105375 | Lelio R Paula | 02/2017 |
7142 | 6*5^150744-7 | 105367 | Lelio R Paula | 11/2014 |
7143 | (2^350018+2074)/2 | 105366 | Stefano Morozzi | 09/2020 |
7144 | 4*10^105364-39 | 105365 | Robert Price | 09/2020 |
7146 | 2^349996-112169 | 105360 | Enzo Doria | 06/2014 |
7145 | (2^349997+3702)/2 | 105360 | Stefano Morozzi | 09/2020 |
7147 | (418*10^105343+23)/9 | 105345 | Robert Price | 02/2020 |
7148 | 25490^13563+13563^25490 | 105334 | Hans Havermann | 10/2020 |
7149 | 11^101142-1080 | 105329 | Enzo Doria | 12/2012 |
7150 | (68*10^105320-41)/9 | 105321 | Robert Price | 10/2013 |
7151 | 24800^17649+17649^24800 | 105319 | Hans Havermann | 09/2020 |
7152 | 3^220712-9934 | 105307 | Enzo Doria | 05/2014 |
7153 | 7*10^105296+9 | 105297 | Robert Price | 09/2015 |
7154 | 89*10^105284-7 | 105286 | Robert Price | 04/2020 |
7155 | 2^349739+1873373 | 105282 | Enzo Doria | 06/2016 |
7156 | 7^124574+24 | 105278 | Lelio R Paula | 11/2016 |
7157 | 2^349708-20957 | 105273 | Enzo Doria | 06/2013 |
7158 | 34115^1218+1218^34115 | 105267 | Hans Havermann | 09/2020 |
7159 | 24029^24029-24020^24020 | 105265 | Henri Lifchitz | 09/2024 |
7160 | 2^349649-20469 | 105255 | Enzo Doria | 06/2013 |
7161 | 2^349607-20109 | 105243 | Enzo Doria | 06/2013 |
7162 | (85*10^105242+473)/9 | 105243 | Robert Price | 01/2020 |
7163 | 2^349594-19085 | 105239 | Enzo Doria | 05/2013 |
7164 | 2^349530+1874479 | 105220 | Enzo Doria | 06/2016 |
7165 | (3^220528+8)/8081 | 105215 | Lelio R Paula | 12/2013 |
7166 | (106*10^105199+17)/3 | 105201 | Robert Price | 04/2021 |
7167 | (2^349452+3570)/2 | 105196 | Stefano Morozzi | 09/2020 |
7168 | 3^220464-112852 | 105189 | Enzo Doria | 07/2014 |
7169 | 2^349419-17349 | 105186 | Enzo Doria | 05/2013 |
7170 | 2^349400-2579 | 105180 | Yves Minet | 07/2014 |
7171 | 8*5^150471+3 | 105176 | Lelio R Paula | 11/2014 |
7172 | (2^349359+2298)/2 | 105168 | Stefano Morozzi | 02/2021 |
7173 | 655^37342+37342^655 | 105165 | Norbert Schneider | 08/2018 |
7174 | 13^94403+94 | 105160 | Lelio R Paula | 12/2016 |
7175 | 2^349301-112309 | 105151 | Enzo Doria | 06/2014 |
7176 | 30291^2960+2960^30291 | 105149 | Hans Havermann | 09/2020 |
7177 | 27350^6981+6981^27350 | 105132 | Hans Havermann | 09/2020 |
7179 | 9*2^349220+5 | 105127 | Lelio R Paula | 09/2014 |
7178 | (2^349225+3122)/2 | 105127 | Stefano Morozzi | 09/2020 |
7180 | 7*3^220317+8 | 105119 | Lelio R Paula | 09/2014 |
7181 | 7^124386+88 | 105119 | Lelio R Paula | 11/2016 |
7182 | (2^349197+570)/2 | 105119 | Stefano Morozzi | 09/2020 |
7183 | 2^349171-19657 | 105111 | Enzo Doria | 06/2013 |
7184 | (2^349115+590)/2 | 105094 | Stefano Morozzi | 09/2020 |
7185 | (2^(6*58185+1)-5)/3 | 105093 | Kevin Acres | 11/2013 |
7186 | (2^349111-5)/3 | 105093 | Lelio R Paula | 12/2013 |
7187 | 675^37142+37142^675 | 105087 | Norbert Schneider | 08/2018 |
7188 | 2^348981-2797573 | 105054 | Enzo Doria | 04/2016 |
7189 | (445^39667+1)/446 | 105050 | Jinyuan Wang | 05/2024 |
7190 | 2^348869-6555 | 105021 | Lelio R Paula | 01/2017 |
7191 | 10^105003-17319 | 105003 | Alfred Reich | 08/2024 |
7192 | 5^150217+78 | 104998 | Lelio R Paula | 11/2016 |
7193 | (88*10^104989-1)/3 | 104991 | Robert Price | 04/2020 |
7194 | (28*10^104972+149)/3 | 104973 | Robert Price | 12/2019 |
7195 | 24927^16262+16262^24927 | 104972 | Hans Havermann | 10/2020 |
7196 | 2^348703-113005 | 104971 | Enzo Doria | 06/2014 |
7197 | (191*10^104956-17)/3 | 104958 | Robert Price | 11/2021 |
7198 | 2^348612-809 | 104943 | Yves Minet | 05/2013 |
7199 | (73*10^104942-1)/9 | 104943 | Robert Price | 01/2015 |
7200 | 2^348583-350407 | 104934 | Enzo Doria | 06/2015 |
7201 | 2^348531-949 | 104919 | Yves Minet | 05/2012 |
7202 | 20^80636-59 | 104910 | Lelio R Paula | 12/2016 |
7203 | 8*10^104893-13 | 104894 | Robert Price | 08/2019 |
7205 | 2^348437+35 | 104890 | Lelio R Paula | 09/2011 |
7204 | 25208^14487+14487^25208 | 104890 | Hans Havermann | 09/2020 |
7206 | 2^348348+135 | 104864 | Lelio R Paula | 09/2011 |
7207 | (29*10^104858+349)/9 | 104859 | Robert Price | 06/2021 |
7208 | 6*10^104852-31 | 104853 | Robert Price | 07/2020 |
7210 | (2^348284+9)/25 | 104843 | Lelio R Paula | 12/2013 |
7209 | 75^55914-74 | 104843 | Norbert Schneider | 01/2015 |
7211 | 2^348268+255255 | 104840 | Lelio R Paula | 01/2017 |
7212 | 35540^891+891^35540 | 104839 | Hans Havermann | 09/2020 |
7213 | 5^149985-52 | 104836 | Lelio R Paula | 11/2016 |
7214 | 2^348224-20249 | 104826 | Enzo Doria | 06/2013 |
7215 | (2^348217+2522)/2 | 104824 | Stefano Morozzi | 09/2020 |
7216 | 2^348212-20105 | 104823 | Enzo Doria | 06/2013 |
7217 | 24647^17898+17898^24647 | 104819 | Hans Havermann | 10/2020 |
7218 | 20^80562+19 | 104814 | Lelio R Paula | 12/2016 |
7219 | 2*10^104811-87 | 104812 | Robert Price | 04/2018 |
7220 | 2^348149-20053 | 104804 | Enzo Doria | 06/2013 |
7221 | 2^348095-171 | 104788 | Lelio R Paula | 09/2011 |
7222 | 25383^13412+13412^25383 | 104769 | Hans Havermann | 09/2020 |
7223 | 2^348003-20377 | 104760 | Enzo Doria | 06/2013 |
7224 | 26^74036-27 | 104759 | Anonymous | 09/2024 |
7226 | 2^347994-741 | 104757 | Lelio R Paula | 12/2016 |
7225 | (2^347993+2234)/2 | 104757 | Stefano Morozzi | 01/2021 |
7227 | (2^347990+790)/2 | 104756 | Stefano Morozzi | 09/2020 |
7228 | 25137^14702+14702^25137 | 104756 | Hans Havermann | 09/2020 |
7229 | (13*2^347972-1)/282309 | 104746 | Lelio R Paula | 03/2014 |
7230 | 12883^25484-25484^12883 | 104740 | Norbert Schneider | 08/2022 |
7231 | 2^347910-109937 | 104732 | Enzo Doria | 04/2014 |
7232 | (88*10^104709-637)/9 | 104710 | Robert Price | 11/2020 |
7233 | (13*10^104702+71)/3 | 104703 | Robert Price | 06/2021 |
7234 | 5^149794+28 | 104702 | Lelio R Paula | 11/2016 |
7235 | 105^51800-2 | 104698 | Lelio R Paula | 10/2017 |
7236 | (16^86939+3^86939)/19 | 104684 | Robert Price | 06/2013 |
7237 | (15^89009-1)/14 | 104682 | Paul Bourdelais | 03/2010 |
7238 | 2^347731-18609 | 104678 | Enzo Doria | 05/2013 |
7239 | 4*6^134519+7 | 104677 | Lelio R Paula | 11/2014 |
7240 | (34*10^104672-259)/9 | 104673 | Robert Price | 12/2021 |
7241 | 25321^13588+13588^25321 | 104656 | Hans Havermann | 09/2020 |
7242 | 2^347625+5367 | 104646 | Riley Fisher | 04/2023 |
7243 | 2^347612-18545 | 104642 | Enzo Doria | 05/2013 |
7244 | 6^134465+95 | 104635 | Lelio R Paula | 11/2016 |
7245 | (2^347588+3718)/2 | 104635 | Stefano Morozzi | 09/2020 |
7246 | (166*10^104633-7)/3 | 104635 | Robert Price | 11/2020 |
7247 | V(750972)/15019441 | 104621 | Serge Batalov | 07/2024 |
7248 | 2^347517-17301 | 104614 | Enzo Doria | 05/2013 |
7249 | (2^347493+3186)/2 | 104606 | Stefano Morozzi | 09/2020 |
7250 | (2^347490+2574)/2 | 104605 | Stefano Morozzi | 09/2020 |