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
19000103Factored
FactorDigitsBitsDate
191643018901271444.1old
382701879880886328712065.12018-05-10 10:16:42
386378015351616403350892375.02021-04-30 04:37:22
ECM
DigitsB1Curves
255000016 / 280
Estimated T-Level: 20.3
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2024-01-05timbit5AFF56EE6FC9EF7431758898753
History
DateUserTypeResult
2024-01-05Georg_EdelmannCERT
PRP Certification
Proof certified good
2024-01-05timbitC-PRP
M19000103/19164301890127/38270187988088632871/38637801535161640335089 : 5AFF56EE6FC9EF74
PRP proof power = 8
PRP: Verified
Proof certified good
2021-04-30LaurVF-PP1
Start=6/5, B1=1000000, B2=54000000, Factor: 38637801535161640335089
2018-05-10TJAOIF
Factor: 38270187988088632871 / TF: 65-66