Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
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Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
23321Factored
FactorDigitsBitsDate
24626977824.6old
269347948615101671754.62008-08-29 02:24:44
2114166618243320641492030844450272831216820869747153.92016-12-13 09:34:50
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
403000000802 / 4588
Estimated T-Level: 35.9
TF below 2^114 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseCFAB691AC9FA98A93013
Verified2017-10-02kkmrkkblmbrbkCFAB691AC9FA98A93013
Verified2017-12-07ATHCFAB691AC9FA98A9313513
Unverified2020-04-17Oliver Kruse9644C5818854ED__3211953
P-1 factors
DateFactorB1B2
2016-12-132114166618243320641492030844450272831216820869750000000018755543263242
History
DateUserTypeResult
2024-01-01nordiNF-PM1
B1=8000000000, B2=2408138284051500
2023-04-06nordiNF-PM1
B1=8000000000
2020-04-17Oliver KruseC-PRP
M23321/24626977/26934794861510167/21141666182433206414920308444502728312168208697 : 9644C5818854ED__
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M23321/24626977/26934794861510167/21141666182433206414920308444502728312168208697 : CFAB691AC9FA98A9
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M23321/24626977/26934794861510167/21141666182433206414920308444502728312168208697 : CFAB691AC9FA98A9
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M23321/known_factors : CFAB691AC9FA98A9
PRP without proof (not generated)
2016-12-13kkmrkkblmbrbkF-PM1
Factor: 21141666182433206414920308444502728312168208697 / (P-1, B1=500000000, B2=18755543263242)
2016-11-28kkmrkkblmbrbkNF-PM1
B1=500000000, B2=10000000000, E=12
2008-08-29-Anonymous-F
Factor: 26934794861510167