56 291 771 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 2⁷³

TF target 2⁷³

Factored

Factor	Digits	Bits	Date
7422992721482854714537	22	72.7	2011-11-05 03:17:59

History

Date	User	Type	Result
2022-06-27	LordJulius	NF	no factor TF: 1-63
2011-11-05	Piepen	F	Factor: 7422992721482854714537
2011-11-05	Piepen	NF	no factor TF: 71-72
2011-11-05	Piepen	NF	no factor TF: 70-71
2011-11-05	Piepen	NF	no factor TF: 71-73
2011-06-03	TheJudger	NF	no factor TF: 69-70
2011-04-15	dsl	NF	no factor TF: 68-69
2009-05-19	Sturle Sunde	NF	no factor TF: 67-68
2008-07-14	Sturle Sunde	NF	no factor TF: 66-67
2008-07-14	Sturle Sunde	NF	no factor TF: 65-66
2008-07-14	Sturle Sunde	NF	no factor TF: 64-65
2008-07-13	Sturle Sunde	NF	no factor TF: 63-64
2002-09-22	-anonymous-	NF	no factor TF: 1-58
2001-09-22	-anonymous-	NF	no factor TF: 1-57
2000-06-11	-anonymous-	NF	no factor TF: 1-56
2000-03-08	-anonymous-	NF	no factor TF: 1-54
2000-01-19	-anonymous-	NF	no factor TF: 1-53
1999-12-15	-anonymous-	NF	no factor TF: 1-53