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
1384613Factored
FactorDigitsBitsDate
55372321012266151639032272.22008-12-04 17:15:36
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)Thomas Hertz2E66D52E209E51540
Verified (Factored)Cornelius Caesar2E66D52E209E51540
Verified (Factored)2008-06-03Brian J. Beesley2E66D52E209E5154459934
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-30Oliver Kruse38AB90DE9F3865881013
Verified2017-10-25kkmrkkblmbrbk38AB90DE9F3865881105118113
History
DateUserTypeResult
2017-10-25kkmrkkblmbrbkC-PRP
M1384613/5537232101226615163903 : 38AB90DE9F386588
PRP: Verified
PRP without proof (not generated)
2017-09-30Oliver KruseC-PRP
M1384613/5537232101226615163903 : 38AB90DE9F386588
PRP: Verified
PRP without proof (not generated)
2008-12-04Chang Chia-TcheF-ECM
Factor: 5537232101226615163903