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
9497Composite, with 5 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
531833619.0old
38267159952458091651.8old
1863801993515752971857.4old
19279312694392447388472270.7old
290676336306678924032866400892285314337121.1old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000006698 / 16550
Estimated T-Level: 47.0
TF below 2^151 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseEB7641E1A6F6F88B5013
Verified2017-10-02kkmrkkblmbrbkEB7641E1A6F6F88B5013
Verified2017-12-07ATHEB7641E1A6F6F88B5809913
Verified2020-04-17Oliver Kruse639341B1E8E42E515712953
Verified2024-07-01kkmrkkblmbrbk639341B1E8E42E515108353
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M9497/186380199351575297/1927931269439244738847/2906763363066789240328664008922853143/3826715995245809/531833 : 639341B1E8E42E51
PRP: Verified
PRP without proof (small exponent)
2023-06-28JacobZNF-PM1
B1=61000000000, B2=254995794420917550
2022-11-24Kevin_9611NF-PM1
B1=1000000000, B2=100149831201420
2021-08-27Seth_TrNF-PM1
B1=400000000
2021-08-27Seth_TrNF-PM1
B1=100000000
2020-04-17Oliver KruseC-PRP
M9497/531833/3826715995245809/186380199351575297/1927931269439244738847/2906763363066789240328664008922853143 : 639341B1E8E42E51
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M9497/531833/3826715995245809/186380199351575297/1927931269439244738847/2906763363066789240328664008922853143 : EB7641E1A6F6F88B
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M9497/531833/3826715995245809/186380199351575297/1927931269439244738847/2906763363066789240328664008922853143 : EB7641E1A6F6F88B
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M9497/known_factors : EB7641E1A6F6F88B
PRP without proof (not generated)