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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Exponent Range:










MnStatusDetails
10858213Factored
FactorBitsDate
92995500025477137814525779.62015-08-26 09:58:38
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^61 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2000-10-15Pierre del Perugia33147D515F2378C36591803
Verified (Factored)2003-12-31hessenpower.de33147D515F2378C36668491
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-04-01ATH1E9002870BFAA1EE1222283053
History
DateUserTypeResult
2021-04-01curtiscCERT
PRP Certification
Proof certified good
2021-04-01ATHC-PRP
M10858213/929955000254771378145257 : 1E9002870BFAA1EE
PRP: Verified
Proof certified good
2015-08-26Gordon SpenceF-ECM
Factor: 929955000254771378145257 / (ECM curve 1, B1=50000, B2=5000000)
2015-05-18ThaNF
no factor from 2^65 to 2^66
2013-12-06lycornNF
no factor from 2^64 to 2^65