Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
1546939Factored
FactorDigitsBitsDate
13058581138312835498812270.12009-04-23 22:18:56
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 640
Estimated T-Level: 25.8 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Ars Technica Team Prime Rib5463F40143F8FAF00
Verified (Factored)1998-11-21David Starr5463F40143F8FAF081663
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-01Oliver Kruse005DC385C78A3F421013
Verified2017-10-30kkmrkkblmbrbk005DC385C78A3F42134905813
History
DateUserTypeResult
2017-10-30kkmrkkblmbrbkC-PRP
M1546939/1305858113831283549881 : 005DC385C78A3F42
PRP: Verified
PRP without proof (not generated)
2017-10-01Oliver KruseC-PRP
M1546939/1305858113831283549881 : 005DC385C78A3F42
PRP: Verified
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12
2009-04-23KAMCOBILLF-ECM
Factor: 1305858113831283549881