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
2897Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
17383514.1old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000002925 / 16550
Estimated T-Level: 45.9
TF below 2^147 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse93D8BB75FF955D9B1013
Verified2017-10-12kkmrkkblmbrbk93D8BB75FF955D9B1153213
Verified2020-04-17Oliver Kruse8C4A843E2F9DA827188453
Verified2024-02-03Wentao Huang8C4A843E2F9DA827119353
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M2897/17383 : 8C4A843E2F9DA827
PRP: Verified
PRP without proof (small exponent)
2022-02-06mikrNF-PM1
B1=60000000000, B2=314698909231947240
2021-07-07ViliamFNF-PM1
B1=1000000000, B2=191000000000
2020-04-17Oliver KruseC-PRP
M2897/17383 : 8C4A843E2F9DA827
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M2897/17383 : 93D8BB75FF955D9B
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M2897/17383 : 93D8BB75FF955D9B
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M2897/17383 : 93D8BB75FF955D9B
PRP without proof (not generated)