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
211231Factored
FactorDigitsBitsDate
16053556011030.6old
91753981125658398311963.02014-12-19 13:18:46
4402029356560498387064300065600732105.12021-11-30 03:11:37
ECM
DigitsB1Curves
2550000280 / 280
30250000560 / 640
Estimated T-Level: 29.4 ⓘ
TF below 2^93 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-22Oliver KruseC1580C9AE269D8802013
Verified (Factored)2017-09-22Oliver KruseC1580C9AE269D8802013
Verified (Factored)2017-11-06kkmrkkblmbrbkC1580C9AE269D88027095713
Verified (Factored)2020-04-17Oliver KruseEAC5803EAB80945E23581353
Verified2021-11-30SRJ2877EAC5803EAB80945E314767653
Verified2023-08-03USAFSSEAC5803EAB80945E34560153
History
DateUserTypeResult
2023-08-03tanaydinCERT
PRP Certification
Proof certified good
2023-08-03USAFSSC-PRP
M211231/1605355601/9175398112565839831/44020293565604983870643000656007 : EAC5803EAB80945E
PRP proof power = 5
PRP: Verified
Proof certified good
2022-02-19Oliver KruseNF-PM1
B1=30000000, B2=10070832992220
2021-11-30mathematizerCERT
PRP Certification
Proof certified good
2021-11-30SRJ2877C-PRP
M211231/1605355601/9175398112565839831/44020293565604983870643000656007 : EAC5803EAB80945E
PRP proof power = 5
PRP: Verified
Proof certified good
2021-11-30fbaurF-PP1
Start=2/7, B1=150000000, Factor: 44020293565604983870643000656007
2021-05-18Oliver KruseNF-PM1
B1=30000000, B2=3000000000
2020-04-17Oliver KruseC-PRP
M211231/1605355601/9175398112565839831 : EAC5803EAB80945E
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M211231/1605355601/9175398112565839831 : C1580C9AE269D880
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M211231/1605355601/9175398112565839831 : C1580C9AE269D880
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M211231/1605355601/9175398112565839831 : C1580C9AE269D880
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M211231/1605355601/9175398112565839831 : C1580C9AE269D880
PRP without proof (not generated)
2014-12-19TJAOIF-ECM
Factor: 9175398112565839831 / (ECM curve 35, B1=50000, B2=5000000)