55 652 731 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 =	555000
B2 =	11932500

Status	Date	User	Residue	Shift	Software
Verified	2013-08-13	Kyle Z Schmidt	96D14F7B413DF6C7	36833049	Windows 64-bit,Prime95,v27.9,build 1
Verified	2019-08-03	-anonymous-	96D14F7B413DF6C7	53312787	Windows 64-bit,Prime95,v29.8,build 5

History

Date	User	Type	Result
2019-08-03	-anonymous-	C-LL	96D14F7B413DF6C7
2018-09-02	Chuck	NF	no factor TF: 73-74
2016-01-23	Judge Hale	NF	no factor TF: 72-73
2013-08-13	Kyle Z Schmidt	C-LL	96D14F7B413DF6C7
2012-07-27	owftheevil	NF-PM1	B1=555000, B2=11932500, E=6
2012-07-14	Kyle Askine	NF	no factor TF: 71-72
2011-09-25	Dubslow	NF	no factor TF: 70-71
2011-09-14	amberjr	NF	no factor TF: 69-70
2011-04-11	Spryte72	NF	no factor TF: 68-69
2009-05-30	-anonymous-	NF	no factor TF: 67-68
2009-01-08	Sturle Sunde	NF	no factor TF: 66-67
2009-01-07	Sturle Sunde	NF	no factor TF: 65-66
2009-01-06	ANONYMOUS	NF	no factor TF: 64-65
2008-08-25	-anonymous-	NF	no factor TF: 1-64
2001-09-30	-anonymous-	NF	no factor TF: 1-57
2000-05-31	-anonymous-	NF	no factor TF: 1-56
2000-03-01	-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