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
98801Factored
FactorDigitsBitsDate
212422151927.7old
958529734533518109532066.42009-11-02 16:34:41
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000343 / 1566
Estimated T-Level: 31.1 ⓘ
TF below 2^98 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-21Oliver KruseAFDDD0504394DF8A2013
Verified2017-10-13kkmrkkblmbrbkAFDDD0504394DF8A27138513
Verified2020-04-17Oliver KruseFFE62E68A6FA972522702253
Verified2024-02-03Wentao HuangFFE62E68A6FA972529614553
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M98801/212422151/95852973453351810953 : FFE62E68A6FA9725
PRP: Verified
PRP without proof (small exponent)
2022-09-19George WoltmanNF-PM1
B1=1000000000, B2=73452492763650
2021-05-01nordiNF-PP1
Start=6/5, B1=40000000, B2=2000000000
2021-04-22nordiNF-PP1
Start=2/7, B1=40000000, B2=2000000000
2020-04-17Oliver KruseC-PRP
M98801/212422151/95852973453351810953 : FFE62E68A6FA9725
PRP: Verified
PRP without proof (small exponent)
2017-10-13kkmrkkblmbrbkC-PRP
M98801/212422151/95852973453351810953 : AFDDD0504394DF8A
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M98801/212422151/95852973453351810953 : AFDDD0504394DF8A
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M98801/212422151/95852973453351810953 : AFDDD0504394DF8A
PRP without proof (not generated)
2017-02-05kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2009-11-02Matthias WurtingerF-ECM
Factor: 95852973453351810953