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

1000)) { this.full_details_checkbox.checked = false; alert('full details cannot be shown for exponent ranges >1000'); }">
Exponent Range:










MnStatusDetails
5118889Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
153566671927.2old
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-20kkmrkkblmbrbk23A6626DD5BEB2261013
Verified2018-05-09ATH23A6626DD5BEB2261182473813
History
DateUserTypeResult
2025-01-10Sid & AndyNF-PM1
B1=3800000, B2=10087570350
2023-05-11This -Anonymous-NF-PM1
B1=50000, B2=1000000
2018-05-09ATHC-PRP
M5118889/153566671 : 23A6626DD5BEB226
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M5118889/153566671 : 23A6626DD5BEB226
PRP: Verified
PRP without proof (not generated)