Marin Mersenne 2^P-1
Username
Password
Forgot password?
Black
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
386437Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
61829921825.9old
60193063515663214791962.42014-10-24 12:46:32
ECM
DigitsB1Curves
2550000280 / 280
30250000378 / 640
Estimated T-Level: 28.0
TF below 2^88 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-23Oliver Kruse5AB8CEEB0E7898E32013
Verified2017-11-02kkmrkkblmbrbk5AB8CEEB0E7898E3225236213
Verified2020-04-18Oliver Kruse2D826D6A9D015FF1222108753
Verified2024-10-04kkmrkkblmbrbk2D826D6A9D015FF1234225753
History
DateUserTypeResult
2024-10-04gregor_krannichCERT
PRP Certification
Proof certified good
2024-10-04kkmrkkblmbrbkC-PRP
M386437/61829921/6019306351566321479 : 2D826D6A9D015FF1
PRP proof power = 5
PRP: Verified
Proof certified good
2024-09-16yuriy_5-1NF-PM1
B1=12000002, B2=1719840021900
2024-02-19Denial140NF-PM1
B1=1000000, B2=2871722700
2022-02-07Lisander ViaeneNF-PM1
B1=50000
2020-04-18Oliver KruseC-PRP
M386437/61829921/6019306351566321479 : 2D826D6A9D015FF1
PRP: Verified
PRP without proof (small exponent)
2017-11-02kkmrkkblmbrbkC-PRP
M386437/61829921/6019306351566321479 : 5AB8CEEB0E7898E3
PRP: Verified
PRP without proof (small exponent)
2017-09-23Oliver KruseC-PRP
M386437/61829921/6019306351566321479 : 5AB8CEEB0E7898E3
PRP: Verified
PRP without proof (not generated)
2014-10-24TJAOIF-ECM
Factor: 6019306351566321479