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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MnStatusDetails
5163437Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
536764944107277825004187865532995.42020-05-27 03:10:40
ECM
DigitsB1Curves
25500009 / 280
Estimated T-Level: 20.2 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Paul Victor NovareseA3A9C8BB56996C9A0
Verified (Factored)1999-05-09Horace SmithA3A9C8BB56996C9A2931508
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-05-27Oliver KruseB68E1187CF6CAA1D117714553
Verified2020-05-28marssystemsB68E1187CF6CAA1D1230366653
P-1 factors
DateFactorB1B2
2020-05-2753676494410727782500418786553100000022500000
History
DateUserTypeResult
2025-02-22Sid & AndyNF
no factor from 2^68 to 2^70
2020-05-28marssystemsC-PRP
M5163437/53676494410727782500418786553 : B68E1187CF6CAA1D
PRP: Verified
PRP without proof (not generated)
2020-05-27Oliver KruseC-PRP
M5163437/53676494410727782500418786553 : B68E1187CF6CAA1D
PRP: Verified
PRP without proof (not generated)
2020-05-27KingF-PM1
Factor: 53676494410727782500418786553 / (P-1, B1=1000000, B2=22500000, E=12)
2018-06-20ramgeisNF
no factor from 2^67 to 2^68
2016-06-01Gordon SpenceNF
no factor from 2^66 to 2^67
2015-08-09snme2pm1NF
no factor from 2^65 to 2^66
2014-12-17VictordeHollanderNF
no factor from 2^64 to 2^65
2014-12-17VictordeHollanderNF
no factor from 2^63 to 2^64
2009-06-24GrunwalderGIMPNF
no factor from 2^62 to 2^63