56 681 293 Exponent Status

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷⁵

TF target 2⁷³

P-1

B1 =	570000
B2 =	12397500

Status	Date	User	Residue	Shift	Software
Verified	2012-10-28	Sprocket	0FE0C8AFD3AE67A7	52505194	Linux 64-bit,Prime95,v27.7,build 2
Verified	2021-07-14	Dubslow	0FE0C8AFD3AE67A7	4330478	Linux 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2021-07-14	Dubslow	C-LL	0FE0C8AFD3AE67A7
2020-03-28	Sid & Andy	NF	no factor TF: 74-75
2018-11-29	ktony	NF	no factor TF: 73-74
2016-02-23	Mark Rose	NF	no factor TF: 61-63
2016-01-22	-anonymous-	NF	no factor TF: 72-73
2012-10-28	Sprocket	C-LL	0FE0C8AFD3AE67A7
2012-07-01	TheJudger	NF-PM1	B1=570000, B2=12397500, E=12
2012-06-23	Jerry Hallett	NF	no factor TF: 71-72
2011-08-31	eon_blue_apocalypse	NF	no factor TF: 70-71
2011-06-07	Paul Leyland	NF	no factor TF: 69-70
2011-04-26	gibacca	NF	no factor TF: 68-69
2009-07-24	piero za	NF	no factor TF: 67-68
2008-08-06	Sturle Sunde	NF	no factor TF: 66-67
2008-08-04	Sturle Sunde	NF	no factor TF: 65-66
2008-08-04	Sturle Sunde	NF	no factor TF: 64-65
2008-08-03	Sturle Sunde	NF	no factor TF: 63-64
2004-02-14	ThomRuley	NF	no factor TF: 1-61
2004-01-27	ThomRuley	NF	no factor TF: 1-61
2002-10-26	-anonymous-	NF	no factor TF: 1-58
2001-09-30	-anonymous-	NF	no factor TF: 1-57
2000-06-29	-anonymous-	NF	no factor TF: 1-56
2000-06-28	-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
1999-12-23	-anonymous-	NF	no factor TF: 1-53

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