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
8906663Factored
FactorDigitsBitsDate
16566393191030.6old
844529785671136.32008-09-08 04:41:15
7273943856834869383542072479.32021-07-29 04:15:33
ECM
DigitsB1Curves
25500005 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2019-03-28ATH4D8DC27248D8349B2707888653
Verified (Factored)2020-09-22kutens4D8DC27248D8349B2572199753
Verified2021-07-29ATH4D8DC27248D8349B378769453
History
DateUserTypeResult
2021-07-29LOBESCERT
PRP Certification
Proof certified good
2021-07-29ATHC-PRP
M8906663/1656639319/84452978567/727394385683486938354207 : 4D8DC27248D8349B
PRP proof power = 8
PRP: Verified
Proof certified good
2021-07-29ATHF-PP1
Start=2/7, B1=250000, B2=25000000, Factor: 727394385683486938354207
2020-09-22Ben DeloCERT
PRP Certification
Proof certified good
2020-09-22kutensC-PRP
M8906663/1656639319/84452978567 : 4D8DC27248D8349B
PRP proof power = 8
PRP: Verified (Factored)
Proof certified good
2019-03-28ATHC-PRP
M8906663/1656639319/84452978567 : 4D8DC27248D8349B
PRP: Verified (Factored)
PRP without proof (not generated)
2008-09-08Will EdgingtonF
Factor: 84452978567