Marin Mersenne 2^P-1
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Finding World Record Primes Since 1996

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MnStatusDetails
14001527Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
348133805960474132940412374.92021-02-01 23:29:05
ECM
DigitsB1Curves
255000066 / 280
Estimated T-Level: 21.2 ⓘ
TF below 2^65 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Tony Reix2AA42A0D905488920
Verified (Factored)2003-10-14Chris Halsall2AA42A0D905488927026639
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-12-04PerigE700DE6A22399C2811090662653
History
DateUserTypeResult
2022-12-05VassiloCERT
PRP Certification
Proof certified good
2022-12-04PerigC-PRP
M14001527/34813380596047413294041 : E700DE6A22399C28
PRP proof power = 8
PRP: Verified
Proof certified good
2021-02-01vbcurtisF-ECM
Factor: 34813380596047413294041 / (ECM curve 10, B1=250000, B2=22250000, Sigma=4796622236856692)
2020-12-03mikrNF
no factor from 2^71 to 2^73
2020-05-12masserNF-PM1
B1=10000000, B2=125000000, E=12
2020-04-26masserNF-PM1
B1=10000000
2018-12-25mikrNF
no factor from 2^70 to 2^71
2018-09-07mikrNF
no factor from 2^69 to 2^70
2017-10-12ramgeisNF
no factor from 2^68 to 2^69
2017-01-23ConductorNF
no factor from 2^67 to 2^68
2015-08-18ThaNF
no factor from 2^66 to 2^67
2014-07-22NesowaNF
no factor from 2^65 to 2^66