Marin Mersenne 2^P-1
Username
Password
Forgot password?
White
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
12672139Factored
FactorDigitsBitsDate
474841978344526543763413728012995.32021-12-27 10:21:53
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2001-07-29Keith PerkinsFC4B5DF99482DD3E8505891
Verified (Factored)2004-09-02Iain DavidsonFC4B5DF99482DD3E12071716
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-06-29Oliver KruseFC4CD90C9AEEF9841686112553
P-1 factors
DateFactorB1B2
2021-12-2747484197834452654376341372801300000712912200
History
DateUserTypeResult
2022-06-29Dennis OkonCERT
PRP Certification
Proof certified good
2022-06-29Oliver KruseC-PRP
M12672139/47484197834452654376341372801 : FC4CD90C9AEEF984
PRP proof power = 8
PRP: Verified
Proof certified good
2021-12-27LuminescenceF-PM1
Factor: 47484197834452654376341372801 / (P-1, B1=300000, B2=712912200)
2021-10-29-Anonymous-NF
no factor from 2^71 to 2^72
2021-08-30SRBaseNF
no factor from 2^70 to 2^71
2021-08-09SRBaseNF
no factor from 2^69 to 2^70
2018-01-07ramgeisNF
no factor from 2^68 to 2^69
2018-01-07ramgeisNF
no factor from 2^67 to 2^68
2015-04-08ThaNF-PM1
B1=300000, B2=6000000, E=12
2015-03-31ThaNF
no factor from 2^66 to 2^67
2014-04-07NesowaNF
no factor from 2^65 to 2^66
2013-06-12lycornNF
no factor from 2^64 to 2^65