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

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MnStatusDetails
9397319Factored
FactorDigitsBitsDate
18552002248225280792412270.72014-08-12 06:49:29
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)2000-07-12tom falconeAB0C4B678B4F0C1B6879536
Verified (Factored)2003-08-25Josh FindleyAB0C4B678B4F0C1B9082892
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2019-09-04trebor086272214EB3FAAD1483852053
Verified2020-11-23kutens086272214EB3FAAD1637258353
History
DateUserTypeResult
2020-11-23C.D.B.CERT
PRP Certification
Proof certified good
2020-11-23kutensC-PRP
M9397319/1855200224822528079241 : 086272214EB3FAAD
PRP proof power = 8
PRP: Verified
Proof certified good
2019-09-04treborC-PRP
M9397319/1855200224822528079241 : 086272214EB3FAAD
PRP: Verified
PRP without proof (not generated)
2014-08-12swildnerF-ECM
Factor: 1855200224822528079241 / (ECM curve 2, B1=50000, B2=5000000)
2013-09-05NesowaNF
no factor from 2^64 to 2^65
2012-09-14James HeinrichNF-PM1
B1=175000, B2=3893750, E=6