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
1972037Factored
FactorDigitsBitsDate
489065177928.9old
201423859191134.22008-07-15 07:48:50
638328021021356391755.82015-02-17 12:25:05
136461593254958186501503272683.52021-05-12 20:49:12
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 Kruse6AF4CF7BA6DF0FDD3013
Verified (Factored)2017-11-12kkmrkkblmbrbk6AF4CF7BA6DF0FDD3134174713
Verified2021-05-13xyuzyz0EEDEB61C55024324156929353
Verified2021-05-14RichD00EEDEB61C5502432464300053
History
DateUserTypeResult
2023-12-18USAFSSNF-PM1
B1=480000, B2=460965960
2022-08-12USAFSSNF-PM1
B1=132000, B2=134381520
2021-05-14Steve JacobsonCERT
PRP Certification
Proof certified good
2021-05-14RichD0C-PRP
M1972037/489065177/20142385919/63832802102135639/13646159325495818650150327 : 0EEDEB61C5502432
PRP proof power = 7
PRP: Verified
Proof certified good
2021-05-13xyuzyzC-PRP
M1972037/489065177/20142385919/63832802102135639/13646159325495818650150327 : 0EEDEB61C5502432
PRP: Verified
PRP without proof (not generated)
2021-05-12_p95holder_F-ECM
Factor: 13646159325495818650150327 / (ECM curve 4, B1=50000, B2=5000000)
2017-11-12kkmrkkblmbrbkC-PRP
M1972037/489065177/20142385919/63832802102135639 : 6AF4CF7BA6DF0FDD
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1972037/489065177/20142385919/63832802102135639 : 6AF4CF7BA6DF0FDD
PRP: Verified
PRP without proof (not generated)
2015-02-17TJAOIF
Factor: 63832802102135639 / TF: 55-56
2008-07-15J FeitsmaF
Factor: 20142385919