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
1195189Factored
FactorDigitsBitsDate
24563875295727925611961.12007-10-21 18:31:24
ECM
DigitsB1Curves
2550000280 / 280
30250000100 / 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)Joel SmithE95ADEFD05EB790D0
Verified (Factored)C. Harald KochE95ADEFD05EB790D0
Verified (Factored)Ricardo MontielE95ADEFD05EB790D0
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-29csabaE7960D24A205E0201013
Verified2017-10-17Oliver KruseE7960D24A205E020157897713
History
DateUserTypeResult
2022-04-12LordJuliusNF
no factor from 2^63 to 2^64
2022-04-12LordJuliusNF
no factor from 2^62 to 2^63
2022-04-12LordJuliusNF
no factor from 2^1 to 2^61
2017-10-17Oliver KruseC-PRP
M1195189/2456387529572792561 : E7960D24A205E020
PRP: Verified
PRP without proof (not generated)
2017-09-29csabaC-PRP
M1195189/2456387529572792561 : E7960D24A205E020
PRP: Verified
PRP without proof (not generated)
2007-10-21James HeinrichF-ECM
Factor: 2456387529572792561