Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
273899Composite, with 5 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
2191193721.1old
32867881825.02008-07-21 09:15:38
671430530631136.02008-07-21 09:15:38
1744929652103291547.32014-03-04 11:30:23
3569233596752710234218009112788.22021-02-26 17:47:46
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000224 / 1566
Estimated T-Level: 30.7
TF below 2^97 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-22Oliver Kruse2588BE20B87731E54013
Verified (Factored)2017-10-12Oliver Kruse2588BE20B87731E54013
Verified (Factored)2017-10-13Oliver Kruse22E9747D2DD36164415457853
Verified (Factored)2017-10-13Oliver Kruse2588BE20B87731E5422099013
Verified (Factored)2017-11-02kkmrkkblmbrbk22E9747D2DD36164413187153
Verified (Factored)2019-04-09kkmrkkblmbrbk2588BE20B87731E543252613
Verified2021-02-26mnd922E9747D2DD36164526086653
Verified2021-03-01LaurV22E9747D2DD36164520214053
History
DateUserTypeResult
2024-10-29yuriy_5-1NF-PM1
B1=25198708, B2=6164555276880
2022-04-05JossNF-PM1
B1=1000000, B2=10001191200
2022-01-03Lisander ViaeneNF-PM1
B1=100000
2021-03-01Ben DeloCERT
PRP Certification
Proof certified good
2021-03-01LaurVC-PRP
M273899/2191193/32867881/67143053063/174492965210329/356923359675271023421800911 : 22E9747D2DD36164
PRP proof power = 5
PRP: Verified
Proof certified good
2021-02-26mnd9C-PRP
M273899/2191193/32867881/67143053063/174492965210329/356923359675271023421800911 : 22E9747D2DD36164
PRP: Verified
PRP without proof (small exponent)
2021-02-26TJAOIF-ECM
Factor: 356923359675271023421800911 / (ECM curve 14, B1=250000, B2=35000000)
2019-04-09kkmrkkblmbrbkC-PRP
M273899/174492965210329/2191193/32867881/67143053063 : 2588BE20B87731E5
PRP: Verified
PRP without proof (small exponent)
2017-11-02kkmrkkblmbrbkC-PRP
M273899/2191193/32867881/67143053063/174492965210329 : 22E9747D2DD36164
PRP: Verified
PRP without proof (small exponent)
2017-10-13Oliver KruseC-PRP
M273899/2191193/32867881/67143053063/174492965210329 : 2588BE20B87731E5
PRP: Verified
PRP without proof (small exponent)
2017-10-13Oliver KruseC-PRP
M273899/2191193/32867881/67143053063/174492965210329 : 22E9747D2DD36164
PRP: Verified
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M273899/known_factors : 2588BE20B87731E5
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M273899/known_factors : 2588BE20B87731E5
PRP without proof (not generated)
2014-03-04TJAOIF
Factor: 174492965210329
2008-07-21J FeitsmaF
Factor: 67143053063
2008-07-21J FeitsmaF
Factor: 32867881