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
2205649Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
98032451905931343.2old
46021288766783511652.02014-07-23 11:48:19
ECM
DigitsB1Curves
2550000280 / 280
30250000136 / 640
Estimated T-Level: 26.1
TF below 2^82 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-09Chang Chia-TcheD1005B367560FC872013
Verified2017-10-25Oliver KruseD1005B367560FC87214786213
History
DateUserTypeResult
2021-07-02Dylan DelgadoNF-PM1
B1=2000000, B2=242000000
2021-06-28Dylan DelgadoNF-PM1
B1=1000000, B2=106000000
2017-10-25Oliver KruseC-PRP
M2205649/9803245190593/4602128876678351 : D1005B367560FC87
PRP: Verified
PRP without proof (not generated)
2017-10-09Chang Chia-TcheC-PRP
M2205649/9803245190593/4602128876678351 : D1005B367560FC87
PRP: Verified
PRP without proof (not generated)
2016-04-12alpertronNF-PM1
B1=500000, B2=15000000, E=12
2014-07-23TJAOIF
Factor: 4602128876678351