Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
1418689Composite: proven not-prime with both PRP and Lucas-Lehmer tests
TF
No factors below 268
TF target 260
TF below 2^81 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 16600000
B2 = 115447271940
ECM
DigitsB1Curves
2550000280 / 280
30250000105 / 640
Estimated T-Level: 25.8
LL
StatusDateUserResidueShift
VerifiedDwayne Towell5B41A7AD6FF9BC490
VerifiedBrian J. Beesley5B41A7AD6FF9BC490
Verified2015-07-19MadPoo5B41A7AD6FF9BC4969876
PRP
StatusDateUserResidueShiftTypeBase
Verified2025-08-26kkmrkkblmbrbk3ED4023193AE009810157513
Verified2025-09-01Kriesel3ED4023193AE0098013
History
DateUserTypeResult
2025-09-03PoaoCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-01KrieselC-PRP
3ED4023193AE0098
PRP proof power = 6
PRP: Verified
Proof certified good
2025-08-26Daniel MijangoCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-08-26kkmrkkblmbrbkC-PRP
3ED4023193AE0098
PRP proof power = 6
PRP: Verified
Proof certified good
2023-09-29Sid & AndyNF-PM1
B1=16600000, B2=115447271940
2023-05-23JossNF-PM1
B1=1418689, B2=10473019830
2023-03-02JossNF-PM1
B1=1418689, B2=4508799750
2022-12-21JossNF-PM1
B1=1418689, B2=1526713650
2019-10-04chuenkitNF
no factor from 2^67 to 2^68
2018-10-15JossNF-PM1
B1=1418689, B2=156055790, E=12
2018-05-25JossNF-PM1
B1=1418689, B2=141868900, E=12
2018-05-07TJAOINF
no factor from 2^66 to 2^67
2016-08-27Bruno VictalNF-PM1
B1=2500000, B2=62500000, E=12
2016-08-16Bruno VictalNF-PM1
B1=2500000, B2=62500000, E=12
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-09-29ramgeisNF
no factor from 2^65 to 2^66
2015-07-19MadPooC-LL
5B41A7AD6FF9BC49
2015-03-16snme2pm1NF
no factor from 2^64 to 2^65
2015-03-16snme2pm1NF
no factor from 2^63 to 2^64
2015-03-04alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2015-02-20JossNF-PM1
B1=445113
2015-02-15JossNF-PM1
B1=404649
2015-01-14JossNF-PM1
B1=367863
2014-11-10JossNF-PM1
B1=245242
2011-05-07GrunwalderGIMPNF
no factor from 2^1 to 2^63
2009-07-26markrNF-PM1
B1=200000, B2=5000000, E=6
2009-02-15Sturle SundeNF
no factor from 2^60 to 2^61