Marin Mersenne 2^P-1
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MnStatusDetails
299261Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
48295545207743959855932272.02009-08-18 17:17:21
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000187 / 1566
Estimated T-Level: 30.6
TF below 2^97 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski6DF20
Verified (Factored)Unknown6DF20
Verified (Factored)Guillermo Ballester Valor2966926397B16DF20
Verified (Factored)Eivind Triel2966926397B16DF29346
Verified (Factored)2001-11-24Eugene Gogol'2966926397B16DF250519
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver Kruse880ECC86B000D9331013
Verified2017-10-12Oliver Kruse880ECC86B000D93316610313
Verified2017-11-06kkmrkkblmbrbk880ECC86B000D93318670213
Verified2020-04-18Oliver Kruse3A900F09F502F469127463253
Verified2024-08-21kkmrkkblmbrbk3A900F09F502F4691348053
History
DateUserTypeResult
2024-12-02yuriy_5-1NF-PM1
B1=27532012, B2=6727006095810
2024-08-21Chun sung sooCERT
PRP Certification
Proof certified good
2024-08-21kkmrkkblmbrbkC-PRP
M299261/4829554520774395985593 : 3A900F09F502F469
PRP proof power = 5
PRP: Verified
Proof certified good
2023-12-11USAFSSNF-PM1
B1=3750000, B2=21060983580
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2021-05-01nordiNF-PP1
Start=6/5, B1=10000000, B2=500000000
2021-04-22nordiNF-PP1
Start=2/7, B1=10000000, B2=500000000
2020-04-18Oliver KruseC-PRP
M299261/4829554520774395985593 : 3A900F09F502F469
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M299261/4829554520774395985593 : 880ECC86B000D933
PRP: Verified
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M299261/4829554520774395985593 : 880ECC86B000D933
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M299261/4829554520774395985593 : 880ECC86B000D933
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M299261/4829554520774395985593 : 880ECC86B000D933
PRP without proof (not generated)
2009-08-18Sturle SundeF-ECM
Factor: 4829554520774395985593
2009-01-23Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-02Sturle SundeNF
no factor from 2^58 to 2^59