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
2150227Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
208999484471636331754.2old
1001037083548034128392166.42020-03-26 16:25:47
ECM
DigitsB1Curves
2550000280 / 280
30250000166 / 640
Estimated T-Level: 26.3
TF below 2^82 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-08Oliver KruseECAAD0428AFEBCEE1013
Verified (Factored)2017-11-18kkmrkkblmbrbkECAAD0428AFEBCEE1107684513
Verified2020-03-27Jinyuan WangB44FD42B665ADBEE2165914553
Verified2020-03-29James HeinrichB44FD42B665ADBEE297234153
History
DateUserTypeResult
2020-03-29James HeinrichC-PRP
M2150227/20899948447163633/100103708354803412839 : B44FD42B665ADBEE
PRP: Verified
PRP without proof (not generated)
2020-03-27Jinyuan WangC-PRP
M2150227/20899948447163633/100103708354803412839 : B44FD42B665ADBEE
PRP: Verified
PRP without proof (not generated)
2020-03-26TJAOIF
Factor: 100103708354803412839 / TF: 66-67
2017-11-18kkmrkkblmbrbkC-PRP
M2150227/20899948447163633 : ECAAD0428AFEBCEE
PRP: Verified
PRP without proof (not generated)
2017-10-08Oliver KruseC-PRP
M2150227/20899948447163633 : ECAAD0428AFEBCEE
PRP: Verified
PRP without proof (not generated)
2016-03-21alpertronNF-PM1
B1=500000, B2=15000000, E=12