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
2038493Factored
FactorDigitsBitsDate
32289729131031.6old
472767296571135.52008-07-15 07:49:37
680155035866680491755.92015-02-23 12:08:46
1976863267403097784012167.42021-09-21 14:48:13
ECM
DigitsB1Curves
2550000280 / 280
30250000112 / 640
Estimated T-Level: 25.9 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-10-06Oliver Kruse5146AFC69755D5341013
Verified (Factored)2017-10-17Oliver Kruse16BFA5A349042C74342448653
Verified (Factored)2017-11-14Chang Chia-Tche16BFA5A349042C743130710253
Verified2021-09-21Luminescence16BFA5A349042C74465592853
Verified2021-09-23_p95holder_16BFA5A349042C74429320353
History
DateUserTypeResult
2021-09-23_p95holder_C-PRP
M2038493/3228972913/47276729657/68015503586668049/197686326740309778401 : 16BFA5A349042C74
PRP: Verified
PRP without proof (not generated)
2021-09-21stubbscrollCERT
PRP Certification
Proof certified good
2021-09-21LuminescenceC-PRP
M2038493/3228972913/47276729657/68015503586668049/197686326740309778401 : 16BFA5A349042C74
PRP proof power = 7
PRP: Verified
Proof certified good
2021-09-21_p95holder_F-ECM
Factor: 197686326740309778401 / (ECM curve 6, B1=50000, B2=5000000)
2017-11-14Chang Chia-TcheC-PRP
M2038493/3228972913/47276729657/68015503586668049 : 16BFA5A349042C74
PRP: Verified
PRP without proof (not generated)
2017-10-17Oliver KruseC-PRP
M2038493/3228972913/47276729657/68015503586668049 : 16BFA5A349042C74
PRP: Verified
PRP without proof (not generated)
2017-10-06Oliver KruseC-PRP
M2038493/3228972913/47276729657/68015503586668049 : 5146AFC69755D534
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12
2015-02-23TJAOIF
Factor: 68015503586668049 / TF: 55-56
2008-07-15J FeitsmaF
Factor: 47276729657