Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
2797Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
2130287785527060324378195688384721476618341134.0old
9996641000021209118367126275725179578724110592147156.12016-11-14 19:12:19
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000018249 / 40830
Estimated T-Level: 52.2
TF below 2^169 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-20kkmrkkblmbrbk8B705B067A681EF92013
Verified2017-09-26George Woltman8B705B067A681EF921913
Verified2017-10-02kkmrkkblmbrbk8B705B067A681EF92013
Verified2020-04-17Oliver Kruse82AECB363A901DEE2195353
Verified2024-02-03Wentao Huang82AECB363A901DEE2147153
P-1 factors
DateFactorB1B2
2016-11-14999664100002120911836712627572517957872411059211000000000000
History
DateUserTypeResult
2024-03-21masserNF-PM1
B1=140000000000, B2=154936629132855570
2024-02-03Wentao HuangC-PRP
M2797/21302877855270603243781956883847214766183/99966410000212091183671262757251795787241105921 : 82AECB363A901DEE
PRP: Verified
PRP without proof (small exponent)
2020-04-17Oliver KruseC-PRP
M2797/21302877855270603243781956883847214766183/99966410000212091183671262757251795787241105921 : 82AECB363A901DEE
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M2797/21302877855270603243781956883847214766183/99966410000212091183671262757251795787241105921 : 8B705B067A681EF9
PRP: Verified
PRP without proof (not generated)
2017-09-26George WoltmanC-PRP
M2797/21302877855270603243781956883847214766183/99966410000212091183671262757251795787241105921 : 8B705B067A681EF9
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M2797/21302877855270603243781956883847214766183/99966410000212091183671262757251795787241105921 : 8B705B067A681EF9
PRP: Verified
PRP without proof (not generated)
2016-11-14kkmrkkblmbrbkF-PM1
Factor: 99966410000212091183671262757251795787241105921 / (P-1, B1=100000000000)