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
7639Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
550009619.1old
18400975991030.8old
2557101620553291547.9old
7568532700065656660096339845719544324138125.82014-08-30 01:03:43
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000002050 / 9201
Estimated T-Level: 41.1
TF below 2^132 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseB547BF57929F64AB4013
Verified2017-10-02kkmrkkblmbrbkB547BF57929F64AB4013
Verified2017-12-07ATHB547BF57929F64AB4366813
Verified2020-04-17Oliver Kruse5396D1CD21DD59324324653
Verified2024-02-03Wentao Huang5396D1CD21DD59324531953
History
DateUserTypeResult
2024-12-09yuriy5-1NF-PM1
B1=24000000000, B2=93848103835646160
2024-02-03Wentao HuangC-PRP
M7639/550009/1840097599/255710162055329/75685327000656566600963398457195443241 : 5396D1CD21DD5932
PRP: Verified
PRP without proof (small exponent)
2021-07-08ViliamFNF-PM1
B1=1000000000, B2=201000000000
2020-04-17Oliver KruseC-PRP
M7639/550009/1840097599/255710162055329/75685327000656566600963398457195443241 : 5396D1CD21DD5932
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M7639/550009/1840097599/255710162055329/75685327000656566600963398457195443241 : B547BF57929F64AB
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M7639/550009/1840097599/255710162055329/75685327000656566600963398457195443241 : B547BF57929F64AB
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M7639/known_factors : B547BF57929F64AB
PRP without proof (not generated)
2014-08-30James HintzF-ECM
Factor: 75685327000656566600963398457195443241 / (ECM curve 144, B1=3000000, B2=300000000)