49 923 943 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷⁴

TF target 2⁷³

P-1

B1 =	565000
B2 =	12288750

Status	Date	User	Residue	Shift	Software
Verified	2010-08-12	AO	782B7C48BC0945EC	48607372	Linux 64-bit,Prime95,v25.9,build 4
Verified	2020-01-16	Dubslow	782B7C48BC0945EC	34632370	Linux 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2024-05-04	Jarod McClintock	NF	no factor TF: 73-74
2020-01-16	Dubslow	C-LL	782B7C48BC0945EC
2018-01-10	monst	NF	no factor TF: 72-73
2015-12-04	-anonymous-	NF	no factor TF: 71-72
2015-09-24	Mark Rose	NF	no factor TF: 70-71
2015-06-04	LaurV	NF	no factor TF: 69-70
2010-08-12	AO	C-LL	782B7C48BC0945EC
2010-06-27	AO	NF-PM1	B1=565000, B2=12288750
2008-09-06	TheJudger	NF	no factor TF: 1-69
2000-03-27	-anonymous-	NF	no factor TF: 1-60
2000-02-09	-anonymous-	NF	no factor TF: 1-54
1999-12-23	-anonymous-	NF	no factor TF: 1-53
1999-12-23	-anonymous-	NF	no factor TF: 1-53