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
2118917Factored
FactorDigitsBitsDate
50854009825.6old
52888168331032.32008-07-14 20:20:34
122241722853078612124885272683.32022-07-04 20:52:32
ECM
DigitsB1Curves
2550000124 / 280
Estimated T-Level: 22.2
TF below 2^69 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-07Oliver Kruse0E3CE753E1BAABC52013
Verified (Factored)2017-11-17kkmrkkblmbrbk0E3CE753E1BAABC52150547613
Verified2022-07-07matzetoniC340C88270EC0D433178268553
Verified2022-07-08_p95holder_C340C88270EC0D433172675453
History
DateUserTypeResult
2022-07-08_p95holder_C-PRP
M2118917/50854009/5288816833/12224172285307861212488527 : C340C88270EC0D43
PRP: Verified
PRP without proof (not generated)
2022-07-07VikkiMtFCERT
PRP Certification
Proof certified good
2022-07-07matzetoniC-PRP
M2118917/50854009/5288816833/12224172285307861212488527 : C340C88270EC0D43
PRP proof power = 7
PRP: Verified
Proof certified good
2022-07-04_p95holder_F-ECM
Factor: 12224172285307861212488527 / (ECM curve 1, B1=50000, B2=5000000)
2017-11-17kkmrkkblmbrbkC-PRP
M2118917/50854009/5288816833 : 0E3CE753E1BAABC5
PRP: Verified
PRP without proof (not generated)
2017-10-07Oliver KruseC-PRP
M2118917/50854009/5288816833 : 0E3CE753E1BAABC5
PRP: Verified
PRP without proof (not generated)
2016-03-27alpertronNF-PM1
B1=500000, B2=15000000, E=12
2008-07-14George WoltmanF-ECM
Factor: 5288816833