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
1968427Factored
FactorDigitsBitsDate
626024232299991445.8old
2019389079980610637958513832787.42022-04-07 09:32:02
ECM
DigitsB1Curves
2550000280 / 280
3025000057 / 640
Estimated T-Level: 25.4
TF below 2^80 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-05Oliver Kruse1A97A2EC04C05D571013
Verified (Factored)2017-11-12Chang Chia-Tche1A97A2EC04C05D571124294213
Verified2022-04-09_p95holder_47320AAD20AC2BD52161481653
Verified2022-04-12ATH47320AAD20AC2BD52178472853
History
DateUserTypeResult
2022-04-12Sharks_w_LasersCERT
PRP Certification
Proof certified good
2022-04-12ATHC-PRP
M1968427/62602423229999/201938907998061063795851383 : 47320AAD20AC2BD5
PRP proof power = 7
PRP: Verified
Proof certified good
2022-04-12Lisander ViaeneNF-PM1
B1=500000, B2=1964033610
2022-04-09_p95holder_C-PRP
M1968427/62602423229999/201938907998061063795851383 : 47320AAD20AC2BD5
PRP: Verified
PRP without proof (not generated)
2022-04-07_p95holder_F-ECM
Factor: 201938907998061063795851383 / (ECM curve 4, B1=50000, B2=5000000)
2017-11-12Chang Chia-TcheC-PRP
M1968427/62602423229999 : 1A97A2EC04C05D57
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1968427/62602423229999 : 1A97A2EC04C05D57
PRP: Verified
PRP without proof (not generated)