68 843 609 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite: 2 known prime factors

Trial Factored to 2⁷²

TF target 2⁷⁴

Factored

Factor	Digits	Bits	Date
7438363290876545179783	22	72.7	2014-04-05 14:02:24
20581971844386769102807	23	74.1	2014-04-05 14:02:24

P-1 factors

Date	Factors	B1	B2
2014-04-05	7438363290876545179783 20581971844386769102807	715000	16445000

History

Date	User	Type	Result
2014-04-05	Sid & Andy	F-PM1	Factor: 153096183821141164066652469377636471424950881
2013-04-28	ANONYMOUS	NF	no factor TF: 71-72
2013-04-28	ANONYMOUS	NF	no factor TF: 70-71
2012-08-15	vats09	NF	no factor TF: 69-70
2010-05-04	PVasilev	NF	no factor TF: 68-69
2010-04-22	-anonymous-	NF	no factor TF: 67-68
2010-04-13	symallad	NF	no factor TF: 66-67
2010-04-08	ANONYMOUS	NF	no factor TF: 65-66
2010-01-23	BS	NF	no factor TF: 64-65
2009-01-06	1997rj7	NF	no factor TF: 1-64
2004-03-26	mdrg	NF	no factor TF: 1-61
2001-05-20	Joss	NF	no factor TF: 1-56