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
6569Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
6621553722.7old
304870705918123979254492374.7old
462216288306485543084787775628339794337121.8old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001299 / 9201
Estimated T-Level: 40.7
TF below 2^130 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse9A3DE29E2FA05CA43013
Verified2017-10-02kkmrkkblmbrbk9A3DE29E2FA05CA43013
Verified2017-12-07ATH9A3DE29E2FA05CA43535013
Verified2020-04-17Oliver Kruse6978A4FACEC8DF4C3453253
Verified2024-02-03Wentao Huang6978A4FACEC8DF4C3613253
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M6569/6621553/30487070591812397925449/4622162883064855430847877756283397943 : 6978A4FACEC8DF4C
PRP: Verified
PRP without proof (small exponent)
2023-08-09-Anonymous-NF-PM1
B1=37000000000, B2=148599418701633900
2021-12-17Oliver KruseNF-PM1
B1=1000000000, B2=1003954060639530
2020-04-17Oliver KruseC-PRP
M6569/6621553/30487070591812397925449/4622162883064855430847877756283397943 : 6978A4FACEC8DF4C
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M6569/6621553/30487070591812397925449/4622162883064855430847877756283397943 : 9A3DE29E2FA05CA4
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M6569/6621553/30487070591812397925449/4622162883064855430847877756283397943 : 9A3DE29E2FA05CA4
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6569/known_factors : 9A3DE29E2FA05CA4
PRP without proof (not generated)