Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
541589Factored
FactorDigitsBitsDate
27706090136571341.3old
282536941624015508707779387192994.52018-07-27 12:39:27
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
Verified (Factored)2017-09-27Oliver Kruse61B8E057A54F8D691013
Verified (Factored)2017-11-04kkmrkkblmbrbk61B8E057A54F8D69152568113
Verified2018-07-28ANONYMOUSA686296134FBFB4221264953
Verified2018-07-30_p95holder_A686296134FBFB42235333253
History
DateUserTypeResult
2021-08-22ViliamFNF-PM1
B1=15000000, B2=1815000000
2018-07-30_p95holder_C-PRP
M541589/2770609013657/28253694162401550870777938719 : A686296134FBFB42
PRP: Verified
PRP without proof (small exponent)
2018-07-28ANONYMOUSC-PRP
M541589/2770609013657/28253694162401550870777938719 : A686296134FBFB42
PRP: Verified
PRP without proof (small exponent)
2018-07-27TJAOIF-ECM
Factor: 28253694162401550870777938719 / (ECM curve 36, B1=250000, B2=25000000)
2017-11-04kkmrkkblmbrbkC-PRP
M541589/2770609013657 : 61B8E057A54F8D69
PRP: Verified
PRP without proof (small exponent)
2017-09-27Oliver KruseC-PRP
M541589/2770609013657 : 61B8E057A54F8D69
PRP: Verified
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=1500000, B2=50000000, E=12