53 433 521 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 2⁶⁸

TF target 2⁷³

Factored

Factor	Digits	Bits	Date
1258312770803762497	19	60.1	2010-11-21 02:52:47

History

Date	User	Type	Result
2010-11-21	-anonymous-	F	Factor: 1258312770803762497
2009-05-02	Chang Chia-Tche	NF	no factor TF: 67-68
2008-12-21	Sturle Sunde	NF	no factor TF: 66-67
2008-12-20	Sturle Sunde	NF	no factor TF: 65-66
2008-12-19	KYOJI_KAMEI	NF	no factor TF: 64-65
2008-06-10	-anonymous-	NF	no factor TF: 1-64
2007-11-17	1997rj7	NF	no factor TF: 1-63
2004-05-11	1997rj7	NF	no factor TF: 1-60
2002-07-06	-anonymous-	NF	no factor TF: 1-58
2001-08-12	-anonymous-	NF	no factor TF: 1-57
2000-05-24	-anonymous-	NF	no factor TF: 1-56
2000-03-01	-anonymous-	NF	no factor TF: 1-54
2000-01-12	-anonymous-	NF	no factor TF: 1-53
1999-12-08	-anonymous-	NF	no factor TF: 1-53