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

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Exponent Range:










MnStatusDetails
14057863Factored
FactorDigitsBitsDate
5552192735998926852658347310873098.82020-10-22 14:51:45
ECM
DigitsB1Curves
25500007 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2002-02-03Kim Neve075357DD059096A712118666
Verified (Factored)2006-05-12Daniel Swanson075357DD059096A77340957
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-12-17rucioBF93CD2865A2E3FE11118995553
P-1 factors
DateFactorB1B2
2020-10-225552192735998926852658347310877000000210000000
History
DateUserTypeResult
2022-12-17iwesCERT
PRP Certification
Proof certified good
2022-12-17rucioC-PRP
M14057863/555219273599892685265834731087 : BF93CD2865A2E3FE
PRP proof power = 8
PRP: Verified
Proof certified good
2020-10-22masserF-PM1
Factor: 555219273599892685265834731087 / (P-1, B1=7000000, B2=210000000, E=12)
2020-09-07ThaNF-PM1
B1=1500000, B2=30000000, E=12
2020-08-14masserNF
no factor from 2^70 to 2^71
2020-05-29masserNF
no factor from 2^69 to 2^70
2018-01-24ramgeisNF
no factor from 2^68 to 2^69
2018-01-24ramgeisNF
no factor from 2^67 to 2^68
2015-08-21ThaNF
no factor from 2^66 to 2^67
2014-07-22NesowaNF
no factor from 2^65 to 2^66