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
7867Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
38099237618407684974242573814376073996864999345148.1old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000006548 / 9201
Estimated T-Level: 43.6
TF below 2^140 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse0C587FBF573C76051013
Verified2017-10-02kkmrkkblmbrbk0C587FBF573C76051013
Verified2017-12-07ATH0C587FBF573C76051613213
Verified2020-04-17Oliver Kruse8AD274FD6DCBB5011157953
Verified2024-02-03Wentao Huang8AD274FD6DCBB5011691253
History
DateUserTypeResult
2024-12-11yuriy5-1NF-PM1
B1=24000000000, B2=93848103835646160
2024-02-03Wentao HuangC-PRP
M7867/380992376184076849742425738143760739968649993 : 8AD274FD6DCBB501
PRP: Verified
PRP without proof (small exponent)
2021-07-10ViliamFNF-PM1
B1=1000000000, B2=201000000000
2020-04-17Oliver KruseC-PRP
M7867/380992376184076849742425738143760739968649993 : 8AD274FD6DCBB501
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M7867/380992376184076849742425738143760739968649993 : 0C587FBF573C7605
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M7867/380992376184076849742425738143760739968649993 : 0C587FBF573C7605
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M7867/known_factors : 0C587FBF573C7605
PRP without proof (not generated)