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
1965517Factored
FactorDigitsBitsDate
54719993291032.3old
290133759349013784371212374.62021-04-01 16:25:01
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 640
Estimated T-Level: 25.8 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-10-05Oliver Kruse789EE9E42ADF9EB41013
Verified (Factored)2017-11-11ATH789EE9E42ADF9EB41106089713
Verified2021-04-01ATH72767042CE7A41DD2114819153
History
DateUserTypeResult
2023-10-15USAFSSNF-PM1
B1=672000, B2=647447724
2022-08-12USAFSSNF-PM1
B1=132000, B2=134381520
2021-04-01curtiscCERT
PRP Certification
Proof certified good
2021-04-01ATHC-PRP
M1965517/5471999329/29013375934901378437121 : 72767042CE7A41DD
PRP proof power = 7
PRP: Verified
Proof certified good
2021-04-01_p95holder_F-ECM
Factor: 29013375934901378437121 / (ECM curve 4, B1=50000, B2=5000000)
2017-11-11ATHC-PRP
M1965517/5471999329 : 789EE9E42ADF9EB4
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1965517/5471999329 : 789EE9E42ADF9EB4
PRP: Verified (Factored)
PRP without proof (not generated)