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
273283Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
665170823929.3old
1658456145131237.32008-07-21 09:15:38
2979129938413911548.12014-03-26 11:26:11
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000226 / 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
Verified2017-09-24Oliver Kruse57E1FF3EEB7EDD993013
Verified2017-10-13Oliver KruseE806D0B496818EF2326880153
Verified2017-10-13Oliver Kruse57E1FF3EEB7EDD99312828813
Verified2017-11-02kkmrkkblmbrbkE806D0B496818EF239544953
Verified2019-04-09kkmrkkblmbrbk57E1FF3EEB7EDD99327232313
History
DateUserTypeResult
2024-10-29yuriy_5-1NF-PM1
B1=25142036, B2=6164555276880
2022-03-20Lisander ViaeneNF-PM1
B1=5550000, B2=23334756900
2022-03-20Lisander ViaeneNF-PM1
B1=5550000
2022-01-03Lisander ViaeneNF-PM1
B1=100000
2019-04-09kkmrkkblmbrbkC-PRP
M273283/165845614513/297912993841391/665170823 : 57E1FF3EEB7EDD99
PRP: Verified
PRP without proof (small exponent)
2017-11-02kkmrkkblmbrbkC-PRP
M273283/665170823/165845614513/297912993841391 : E806D0B496818EF2
PRP: Verified
PRP without proof (small exponent)
2017-10-13Oliver KruseC-PRP
M273283/665170823/165845614513/297912993841391 : 57E1FF3EEB7EDD99
PRP: Verified
PRP without proof (small exponent)
2017-10-13Oliver KruseC-PRP
M273283/665170823/165845614513/297912993841391 : E806D0B496818EF2
PRP: Verified
PRP without proof (small exponent)
2017-09-24Oliver KruseC-PRP
M273283/665170823/165845614513/297912993841391 : 57E1FF3EEB7EDD99
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M273283/665170823/165845614513/297912993841391 : 57E1FF3EEB7EDD99
PRP without proof (not generated)
2014-03-26TJAOIF
Factor: 297912993841391
2008-07-21J FeitsmaF
Factor: 165845614513