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
75527Factored
FactorDigitsBitsDate
89565717073611343.0old
3429573374611910650012168.22009-06-20 03:42:53
28441725275812983588150578340985510336117.82017-01-17 07:15:15
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001093 / 1566
Estimated T-Level: 33.5
TF below 2^106 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse45560F07C2F9CDC53013
Verified2017-10-02kkmrkkblmbrbk45560F07C2F9CDC53013
Verified2017-12-07ATH45560F07C2F9CDC532338513
Verified2020-04-17Oliver Kruse4D290AF6CB171A6B3583953
Verified2024-02-03Wentao Huang4D290AF6CB171A6B36672053
P-1 factors
DateFactorB1B2
2017-01-1728441725275812983588150578340985510310000000012720901946406
History
DateUserTypeResult
2024-02-03masserNF-PP1
Start=73/11, B1=25000000, B2=1775000000
2024-02-03Wentao HuangC-PRP
M75527/8956571707361/342957337461191065001/284417252758129835881505783409855103 : 4D290AF6CB171A6B
PRP: Verified
PRP without proof (small exponent)
2024-02-01masserNF-PP1
Start=6/5, B1=25000000, B2=1775000000
2024-02-01masserNF-PP1
Start=2/7, B1=25000000, B2=1775000000
2022-04-02George WoltmanNF-PM1
B1=1000000000, B2=95577956343870
2020-04-17Oliver KruseC-PRP
M75527/8956571707361/342957337461191065001/284417252758129835881505783409855103 : 4D290AF6CB171A6B
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M75527/8956571707361/342957337461191065001/284417252758129835881505783409855103 : 45560F07C2F9CDC5
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M75527/8956571707361/342957337461191065001/284417252758129835881505783409855103 : 45560F07C2F9CDC5
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M75527/8956571707361/342957337461191065001/284417252758129835881505783409855103 : 45560F07C2F9CDC5
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M75527/8956571707361/342957337461191065001/284417252758129835881505783409855103 : 45560F07C2F9CDC5
PRP without proof (not generated)
2017-01-17kkmrkkblmbrbkF-PM1
Factor: 284417252758129835881505783409855103 / (P-1, B1=100000000, B2=12720901946406)
2016-12-08kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2009-06-20Matthias WurtingerF-ECM
Factor: 342957337461191065001