58 878 793 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 =	555000
B2 =	11238750

Status	Date	User	Residue	Shift	Software
Verified	2013-05-14	Reed_Young	EDACCC30B6B0AB2F	26404204	Linux 64-bit,Prime95,v26.6,build 3
Verified	2021-10-21	Kriesel	EDACCC30B6B0AB2F	25432812	Windows 64-bit,Prime95,v30.6,build 4

History

Date	User	Type	Result
2021-10-21	Kriesel	C-LL	EDACCC30B6B0AB2F
2018-06-06	linament	NF	no factor TF: 73-74
2016-02-23	Mark Rose	NF	no factor TF: 60-63
2013-05-14	Reed_Young	C-LL	EDACCC30B6B0AB2F
2012-11-18	owftheevil	NF-PM1	B1=555000, B2=11238750, E=6
2012-10-12	Bdot	NF	no factor TF: 72-73
2012-07-08	Kyle Askine	NF	no factor TF: 71-72
2012-02-25	Ethan O'Connor	NF	no factor TF: 70-71
2011-05-07	Paul Leyland	NF	no factor TF: 69-70
2009-07-23	S485122	NF	no factor TF: 68-69
2009-07-22	S485122	NF	no factor TF: 67-68
2009-07-22	S485122	NF	no factor TF: 66-67
2009-06-11	dmbleess	NF	no factor TF: 65-66
2009-03-17	Sturle Sunde	NF	no factor TF: 64-65
2009-01-15	Sturle Sunde	NF	no factor TF: 63-64
2004-01-07	1997rj7	NF	no factor TF: 1-60
2003-07-30	-anonymous-	NF	no factor TF: 1-59
2002-11-02	-anonymous-	NF	no factor TF: 1-58
2001-07-17	-anonymous-	NF	no factor TF: 1-57
2000-06-23	-anonymous-	NF	no factor TF: 1-56
2000-02-09	-anonymous-	NF	no factor TF: 1-54
1999-12-23	-anonymous-	NF	no factor TF: 1-53

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