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
1951843Factored
FactorDigitsBitsDate
293532828199371444.7old
16721633460902925721251832580.52021-07-26 19:20:30
229200721217208221794674232684.22022-05-12 09:17:37
ECM
DigitsB1Curves
2550000280 / 280
3025000056 / 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 Kruse3B0C17777F2C07241013
Verified (Factored)2017-11-11kkmrkkblmbrbk3B0C17777F2C0724132460713
Verified (Factored)2021-07-26SRJ28778009F3FD3BF937CC288273953
Verified2022-05-12aperson18009F3FD3BF937CC3157645153
History
DateUserTypeResult
2022-05-12S01103CERT
PRP Certification
Proof certified good
2022-05-12aperson1C-PRP
M1951843/29353282819937/1672163346090292572125183/22920072121720822179467423 : 8009F3FD3BF937CC
PRP proof power = 7
PRP: Verified
Proof certified good
2022-05-12TJAOIF-ECM
Factor: 22920072121720822179467423 / (ECM curve 42, B1=50000, B2=7500000)
2021-07-26David BarinaCERT
PRP Certification
Proof certified good
2021-07-26SRJ2877C-PRP
M1951843/29353282819937/1672163346090292572125183 : 8009F3FD3BF937CC
PRP proof power = 7
PRP: Verified (Factored)
Proof certified good
2021-07-26_p95holder_F-ECM
Factor: 1672163346090292572125183 / (ECM curve 4, B1=50000, B2=5000000)
2017-11-11kkmrkkblmbrbkC-PRP
M1951843/29353282819937 : 3B0C17777F2C0724
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1951843/29353282819937 : 3B0C17777F2C0724
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12