6 148 627 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
65685879194408503512353	23	75.8	2016-05-25 23:38:27

ECM

Digits	B1	Curves
25	50000	6 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1999-03-15	Hugh Sconyers	D094B6338988FC08	0
Verified (Factored)	2000-12-31	Kevin Bjarnason	D094B6338988FC08	1320600

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-20	kkmrkkblmbrbk	7F876C5CF3AA0B42	1	0	1	3
Verified	2018-09-18	rucio	7F876C5CF3AA0B42	1	1352970	1	3

History

Date	User	Type	Result
2018-09-18	rucio	C-PRP	M6148627/65685879194408503512353 : 7F876C5CF3AA0B42 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M6148627/65685879194408503512353 : 7F876C5CF3AA0B42 PRP: Verified PRP without proof (not generated)
2016-05-25	bam	F-ECM	Factor: 65685879194408503512353 / (ECM curve 3, B1=50000, B2=5000000)
2016-04-08	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-10-08	Bruno Victal	NF	no factor from 2^65 to 2^66
2014-09-18	monst	NF	no factor from 2^64 to 2^65
2014-09-10	Nesowa	NF	no factor from 2^63 to 2^64
2013-03-02	Squeeky_Squirrel	NF-PM1	B1=115000, B2=2242500, E=6