56 920 141 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 =	565000
B2 =	11158750

Status	Date	User	Residue	Shift	Software
Verified	2014-08-21	David R Bell	ECC60F91BBF271DC	17421559	Windows 64-bit,Prime95,v25.11,build 2
Verified	2021-07-05	Dubslow	ECC60F91BBF271DC	16797564	Linux 64-bit,Prime95,v29.8,build 6
Verified	2022-04-08	Sparky70	ECC60F91BBF271DC	1945607	Windows 64-bit,Prime95,v29.4,build 8

History

Date	User	Type	Result
2022-04-08	Sparky70	C-LL	ECC60F91BBF271DC
2021-07-05	Dubslow	C-LL	ECC60F91BBF271DC
2019-02-03	TheJudger	NF	no factor TF: 73-74
2016-02-23	Mark Rose	NF	no factor TF: 62-63
2014-08-21	David R Bell	C-LL	ECC60F91BBF271DC
2014-07-06	chalsall	NF	no factor TF: 72-73
2012-07-24	driveByUpgrades	NF-PM1	B1=565000, B2=11158750
2012-07-15	Sebastian Hornbostel	NF	no factor TF: 71-72
2011-09-08	S00030	NF	no factor TF: 70-71
2011-06-11	Todd	NF	no factor TF: 69-70
2011-04-19	Paul Leyland	NF	no factor TF: 68-69
2009-11-23	-anonymous-	NF	no factor TF: 67-68
2008-08-26	Sturle Sunde	NF	no factor TF: 66-67
2008-08-26	Sturle Sunde	NF	no factor TF: 65-66
2008-08-25	Sturle Sunde	NF	no factor TF: 64-65
2008-08-24	Sturle Sunde	NF	no factor TF: 63-64
2005-01-20	ThomRuley	NF	no factor TF: 1-62
2002-11-16	-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

Username
Password