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
282661Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
1074852371831236.6old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000212 / 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
Verified2017-09-22Oliver KruseBB430694804107261013
Verified2017-10-12Oliver KruseBB4306948041072611918913
Verified2017-11-06kkmrkkblmbrbkBB43069480410726125634813
Verified2020-04-17Oliver KruseCF231A01547330C114513653
Verified2024-08-10kkmrkkblmbrbkCF231A01547330C1122120853
History
DateUserTypeResult
2024-11-08yuriy_5-1NF-PM1
B1=26004812, B2=6348019808130
2024-08-11Jordan AhmadCERT
PRP Certification
Proof certified good
2024-08-10kkmrkkblmbrbkC-PRP
M282661/107485237183 : CF231A01547330C1
PRP proof power = 5
PRP: Verified
Proof certified good
2023-02-14USAFSSNF-PM1
B1=3500000, B2=18264117300
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-04-17Oliver KruseC-PRP
M282661/107485237183 : CF231A01547330C1
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M282661/107485237183 : BB43069480410726
PRP: Verified
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M282661/107485237183 : BB43069480410726
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M282661/107485237183 : BB43069480410726
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M282661/107485237183 : BB43069480410726
PRP without proof (not generated)