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

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Exponent Range:










MnStatusDetails
14002501Factored
FactorDigitsBitsDate
2881883865093542048572168.02017-01-27 11:27:02
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0
TF below 2^61 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)sdpp9993D8A2B6EBE6E7317109849
Verified (Factored)2003-03-27Chris Halsall93D8A2B6EBE6E7314013440
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2022-12-08Funky Waddle409C009FCAD00D431450772553
History
DateUserTypeResult
2023-10-11nordiNF-PM1
B1=300000, B2=315888300
2022-12-09Steve JacobsonCERT
PRP Certification
Proof certified good
2022-12-08Funky WaddleC-PRP
M14002501/288188386509354204857 : 409C009FCAD00D43
PRP proof power = 8
PRP: Verified
Proof certified good
2022-10-04nordiNF-PM1
B1=300000
2017-01-27ConductorF
Factor: 288188386509354204857 / TF: 67-68
2015-08-18ThaNF
no factor from 2^66 to 2^67
2014-07-22NesowaNF
no factor from 2^65 to 2^66