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
381011Factored
FactorDigitsBitsDate
29698916615991625511961.42007-08-13 20:41:01
ECM
DigitsB1Curves
2550000280 / 280
30250000200 / 640
Estimated T-Level: 26.6 ⓘ
TF below 2^83 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-23Oliver Kruse9DB67D24807AB38C1013
Verified2017-11-02kkmrkkblmbrbk9DB67D24807AB38C123952713
Unverified (Reliable)2020-04-18Oliver Kruse29DAC35D4BAA75__17662453
History
DateUserTypeResult
2024-02-18Denial140NF-PM1
B1=1000000, B2=4250639250
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2020-04-18Oliver KruseC-PRP
M381011/2969891661599162551 : 29DAC35D4BAA75__
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-11-02kkmrkkblmbrbkC-PRP
M381011/2969891661599162551 : 9DB67D24807AB38C
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-09-23Oliver KruseC-PRP
M381011/2969891661599162551 : 9DB67D24807AB38C
PRP: Unverified (Reliable)
PRP without proof (not generated)
2007-08-13ATHF-ECM
Factor: 2969891661599162551