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
308951Factored
FactorDigitsBitsDate
124198303926.9old
13494979691030.32008-07-21 09:16:25
44299011097480095288472271.92014-07-31 17:55:32
7753562126562147067190419212789.32021-10-24 06:47:04
ECM
DigitsB1Curves
2550000280 / 280
30250000422 / 640
Estimated T-Level: 28.3
TF below 2^89 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-22Oliver KruseF093470FB2B8A2BD3013
Verified (Factored)2017-09-24Oliver KruseF093470FB2B8A2BD3013
Verified (Factored)2017-11-07kkmrkkblmbrbkF093470FB2B8A2BD316347613
Verified (Factored)2020-04-18Oliver Kruse3FDEC64E8C786058321674253
Verified2021-10-24SRJ28773FDEC64E8C786058427090153
History
DateUserTypeResult
2024-02-24Denial140NF-PM1
B1=10000000, B2=206662045590
2024-02-22Denial140NF-PM1
B1=10000000
2023-03-18Denial140NF-PM1
B1=1000000, B2=65871826020
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2021-10-24LOBESCERT
PRP Certification
Proof certified good
2021-10-24SRJ2877C-PRP
M308951/124198303/1349497969/4429901109748009528847/775356212656214706719041921 : 3FDEC64E8C786058
PRP proof power = 5
PRP: Verified
Proof certified good
2021-10-24nordiF-ECM
Factor: 775356212656214706719041921 / (ECM curve 172, B1=250000, B2=36750000, Sigma=3519766878741768)
2020-04-18Oliver KruseC-PRP
M308951/124198303/1349497969/4429901109748009528847 : 3FDEC64E8C786058
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-11-07kkmrkkblmbrbkC-PRP
M308951/124198303/1349497969/4429901109748009528847 : F093470FB2B8A2BD
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-09-24Oliver KruseC-PRP
M308951/124198303/1349497969/4429901109748009528847 : F093470FB2B8A2BD
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M308951/124198303/1349497969/4429901109748009528847 : F093470FB2B8A2BD
PRP without proof (not generated)
2014-07-31Richard B. WoodsF-ECM
Factor: 4429901109748009528847
2008-07-21J FeitsmaF
Factor: 1349497969