68 621 681 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite: 1 known prime factor

Trial Factored to 2⁷⁴

TF target 2⁷⁴

Factored

Factor	Digits	Bits	Date
320729348220772757473	21	68.1	2014-11-30 05:28:09

P-1 factors

Date	Factors	B1	B2
2014-11-30	320729348220772757473	625000	0

History

Date	User	Type	Result
2014-11-30	Nesowa	F-PM1	Factor: 320729348220772757473 / B1=625000
2014-09-26	Mark Rose	NF	no factor TF: 73-74
2014-09-22	gcardona	NF	no factor TF: 72-73
2014-08-05	Architects Cubed	NF	no factor TF: 71-72
2012-08-12	Norman Ley	NF	no factor TF: 70-71
2012-03-16	ITS	NF	no factor TF: 69-70
2010-04-26	sannerud.com	NF	no factor TF: 68-69
2010-04-26	sannerud.com	NF	no factor TF: 67-68
2010-04-26	Charles Spalton	NF	no factor TF: 66-67
2010-04-19	ITS	NF	no factor TF: 65-66
2010-04-13	jomateix	NF	no factor TF: 64-65
2009-01-26	1997rj7	NF	no factor TF: 1-64
2004-07-13	-anonymous-	NF	no factor TF: 1-61
2004-03-01	mdrg	NF	no factor TF: 1-60