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

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Exponent Range:










MnStatusDetails
1372363Factored
FactorDigitsBitsDate
18528089368478062482712270.72014-02-19 00:20:16
ECM
DigitsB1Curves
2550000280 / 280
30250000105 / 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)Jim Mulvey18D04165D8113D420
Verified (Factored)Cornelius Caesar18D04165D8113D420
Verified (Factored)Brian J. Beesley18D04165D8113D42876637
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-30Oliver Kruse6548EDEEC320B7A91013
Verified2017-10-25kkmrkkblmbrbk6548EDEEC320B7A9128994713
History
DateUserTypeResult
2022-03-07LordJuliusNF
no factor from 2^58 to 2^60
2017-10-25kkmrkkblmbrbkC-PRP
M1372363/1852808936847806248271 : 6548EDEEC320B7A9
PRP: Verified
PRP without proof (not generated)
2017-09-30Oliver KruseC-PRP
M1372363/1852808936847806248271 : 6548EDEEC320B7A9
PRP: Verified
PRP without proof (not generated)
2014-02-19jim f in mnF-ECM
Factor: 1852808936847806248271
2013-01-23dbaughNF
no factor from 2^62 to 2^63
2012-08-10Sebastian HornbostelNF
no factor from 2^61 to 2^62
2009-02-15Sturle SundeNF
no factor from 2^60 to 2^61