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
1597Factored
FactorDigitsBitsDate
4642111690439245824275441733107673735115.2old
4831632414921993697342264726632706902337170737234845753175.02014-10-17 23:45:01
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000040830 / 40830
60260000000105362 / 105362
65800000000159492 / 194238
Estimated T-Level: 64.1
TF below 2^208 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseE6CEF3E8CD9C48AC2013
Verified2017-10-02kkmrkkblmbrbkE6CEF3E8CD9C48AC2013
Verified2017-12-07ATHE6CEF3E8CD9C48AC24213
Verified2020-04-17Oliver Kruse53A93A5FE1E90F95292053
Verified2020-08-12_p95holder_53A93A5FE1E90F95294953
History
DateUserTypeResult
2024-03-01masserNF-PM1
B1=250000000000, B2=511759028305324800
2022-01-25Ethan O'ConnorNF-PM1
B1=13000000000, B2=100371492803541960
2022-01-25Ethan O'ConnorNF-PM1
B1=1300000000, B2=10036658384863110
2021-07-22ViliamFNF-PP1
Start=2/7, B1=1000000000, B2=221000000000
2020-08-12_p95holder_C-PRP
M1597/46421116904392458242754417331076737/48316324149219936973422647266327069023371707372348457 : 53A93A5FE1E90F95
PRP: Verified
PRP without proof (small exponent)
2020-04-17Oliver KruseC-PRP
M1597/46421116904392458242754417331076737/48316324149219936973422647266327069023371707372348457 : 53A93A5FE1E90F95
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M1597/46421116904392458242754417331076737/48316324149219936973422647266327069023371707372348457 : E6CEF3E8CD9C48AC
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M1597/46421116904392458242754417331076737/48316324149219936973422647266327069023371707372348457 : E6CEF3E8CD9C48AC
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M1597/known_factors : E6CEF3E8CD9C48AC
PRP without proof (not generated)
2016-09-07kkmrkkblmbrbkNF-PM1
B1=1000000000, B2=100000000000, E=12
2014-10-17Matthias WurtingerF-ECM
Factor: 48316324149219936973422647266327069023371707372348457