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
211177Factored
FactorDigitsBitsDate
124176490071588913432063.42007-11-27 03:12:28
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000246 / 1566
Estimated T-Level: 30.8 ⓘ
TF below 2^97 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-22Oliver Kruse81A44A992C02C4461013
Verified2017-09-22Oliver Kruse81A44A992C02C4461013
Verified2017-11-06kkmrkkblmbrbk81A44A992C02C44616664713
Verified2020-04-17Oliver Kruse7A96C323609D2C9E110552053
Verified2023-08-03USAFSS7A96C323609D2C9E19470353
History
DateUserTypeResult
2023-08-03Ryan PropperCERT
PRP Certification
Proof certified good
2023-08-03USAFSSC-PRP
M211177/12417649007158891343 : 7A96C323609D2C9E
PRP proof power = 5
PRP: Verified
Proof certified good
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2022-02-19Oliver KruseNF-PM1
B1=30000000, B2=10070832992220
2021-11-30fbaurNF-PP1
Start=2/7, B1=150000000, B2=12600000000
2021-05-18Oliver KruseNF-PM1
B1=30000000, B2=3000000000
2020-04-17Oliver KruseC-PRP
M211177/12417649007158891343 : 7A96C323609D2C9E
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M211177/12417649007158891343 : 81A44A992C02C446
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M211177/12417649007158891343 : 81A44A992C02C446
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M211177/12417649007158891343 : 81A44A992C02C446
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M211177/12417649007158891343 : 81A44A992C02C446
PRP without proof (not generated)
2007-11-27James HeinrichF-ECM
Factor: 12417649007158891343