55 831 049 Exponent Status

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷⁴

TF target 2⁷³

P-1

B1 =	560000
B2 =	12180000

Status	Date	User	Residue	Shift	Software
Verified	2013-02-23	Stephan Grupp	0C66A3725F3B2438	35076525	Windows,Prime95,v26.6,build 3
Verified	2021-04-19	Dubslow	0C66A3725F3B2438	24051112	Linux 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2021-04-19	Dubslow	C-LL	0C66A3725F3B2438
2019-02-16	dh1	NF	no factor TF: 73-74
2016-02-14	-anonymous-	NF	no factor TF: 72-73
2013-02-23	Stephan Grupp	C-LL	0C66A3725F3B2438
2012-07-22	TheJudger	NF-PM1	B1=560000, B2=12180000, E=12
2012-04-28	megavink	NF	no factor TF: 71-72
2012-04-28	megavink	NF	no factor TF: 70-71
2011-06-02	-anonymous-	NF	no factor TF: 69-70
2011-04-16	-anonymous-	NF	no factor TF: 68-69
2009-05-17	Sturle Sunde	NF	no factor TF: 67-68
2009-03-14	Sturle Sunde	NF	no factor TF: 66-67
2009-03-13	Sturle Sunde	NF	no factor TF: 65-66
2009-03-12	Sturle Sunde	NF	no factor TF: 64-65
2008-11-17	1997rj7	NF	no factor TF: 1-64
2002-08-17	-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
2000-03-01	-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

Username
Password