7 666 069 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
31853412287349037872076913	26	84.7	2020-05-25 13:54:37

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)	1999-08-22	Manuel J. Galan	156F323DCCABEA5F	4809843
Verified (Factored)	2002-05-05	Bill Rozmiarek	156F323DCCABEA5F	6664261

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-05-26	Klaus Nordmann	EB91B1B4886EB4D7	1	83372	5	3
Verified	2020-05-27	marssystems	EB91B1B4886EB4D7	1	4918157	5	3

P-1 factors

Date	Factor	B1	B2
2020-05-25	31853412287349037872076913	1337698	32104742

History

Date	User	Type	Result
2020-05-27	marssystems	C-PRP	M7666069/31853412287349037872076913 : EB91B1B4886EB4D7 PRP: Verified PRP without proof (not generated)
2020-05-26	Klaus Nordmann	C-PRP	M7666069/31853412287349037872076913 : EB91B1B4886EB4D7 PRP: Verified PRP without proof (not generated)
2020-05-25	GdS	F-PM1	Factor: 31853412287349037872076913 / (P-1, B1=1337698, B2=32104742, E=12)
2020-03-20	TJAOI	NF	no factor from 2^68 to 2^69
2018-07-31	ramgeis	NF	no factor from 2^67 to 2^68
2016-09-19	Gordon Spence	NF	no factor from 2^66 to 2^67
2015-06-12	VictordeHollander	NF	no factor from 2^65 to 2^66
2013-12-07	David Campeau	NF	no factor from 2^64 to 2^65
2013-10-11	Nesowa	NF	no factor from 2^63 to 2^64
2012-08-01	Nesowa	NF-PM1	B1=95000, B2=1757500, E=6