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
289099Factored
FactorDigitsBitsDate
640844794561765230999672375.8old
185747119217901373170510095378392934110.52020-11-06 10:13:05
ECM
DigitsB1Curves
2550000280 / 280
30250000504 / 640
Estimated T-Level: 28.9
TF below 2^91 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-22Oliver Kruse81CBB27F1F034FF51013
Verified (Factored)2017-10-12Oliver Kruse81CBB27F1F034FF5126872913
Verified (Factored)2017-11-06kkmrkkblmbrbk81CBB27F1F034FF5119238413
Verified (Factored)2020-04-17Oliver KruseDB82211B7092705B11680353
Verified2020-11-06mnd9DB82211B7092705B23497953
Verified2020-11-07mrhDB82211B7092705B217761753
History
DateUserTypeResult
2023-03-19Naegi MakotoNF-PM1
B1=2000000, B2=69052933950
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-11-20Simon JosefssonCERT
PRP Certification
Proof certified good
2020-11-07Ben DeloCERT
PRP Certification
Proof certified good
2020-11-07mrhC-PRP
M289099/64084479456176523099967/1857471192179013731705100953783929 : DB82211B7092705B
PRP proof power = 5
PRP: Verified
Proof certified good
2020-11-06mnd9C-PRP
M289099/64084479456176523099967/1857471192179013731705100953783929 : DB82211B7092705B
PRP proof power = 5
PRP: Verified
Proof certified good
2020-11-06TJAOIF-ECM
Factor: 1857471192179013731705100953783929 / (ECM curve 44, B1=250000, B2=25000000)
2020-04-17Oliver KruseC-PRP
M289099/64084479456176523099967 : DB82211B7092705B
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M289099/64084479456176523099967 : 81CBB27F1F034FF5
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M289099/64084479456176523099967 : 81CBB27F1F034FF5
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M289099/64084479456176523099967 : 81CBB27F1F034FF5
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M289099/64084479456176523099967 : 81CBB27F1F034FF5
PRP without proof (not generated)