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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
2787461Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
16724767824.0old
10526858229585431649.92014-05-15 11:37:17
394293413064972036778072375.12023-01-18 09:19:14
444550912664021869658172375.22024-09-27 14:17:54
ECM
DigitsB1Curves
2550000104 / 280
Estimated T-Level: 21.9
TF below 2^68 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-21Oliver Kruse2F2E4B348E625871279492953
Verified (Factored)2017-12-06kkmrkkblmbrbk2F2E4B348E6258712145603453
Verified (Factored)2023-01-18LordJulius2F2E4B348E6258713245899553
Verified2024-10-03Mihai Preda2F2E4B348E625871443630153
P-1 factors
DateFactorB1B2
2023-01-1839429341306497203677807330000261254070
History
DateUserTypeResult
2024-10-03Luke DurantCERT
PRP Certification
Proof certified good
2024-10-03Mihai PredaC-PRP
M2787461/16724767/1052685822958543/39429341306497203677807/44455091266402186965817 : 2F2E4B348E625871
PRP proof power = 7
PRP: Verified
Proof certified good
2024-09-27debrouxlF-ECM
Factor: 44455091266402186965817 / (ECM curve 3, B1=50000, B2=6950000, Sigma=7397369314041382)
2023-01-18james_colladoCERT
PRP Certification
Proof certified good
2023-01-18LordJuliusC-PRP
M2787461/16724767/1052685822958543/39429341306497203677807 : 2F2E4B348E625871
PRP proof power = 7
PRP: Verified (Factored)
Proof certified good
2023-01-18USAFSSF-PM1
Factor: 39429341306497203677807 / (P-1, B1=330000, B2=261254070)
2017-12-06kkmrkkblmbrbkC-PRP
M2787461/16724767/1052685822958543 : 2F2E4B348E625871
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-21Oliver KruseC-PRP
M2787461/16724767/1052685822958543 : 2F2E4B348E625871
PRP: Verified (Factored)
PRP without proof (not generated)
2014-05-15TJAOIF
Factor: 1052685822958543