57 978 821 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 =	540000
B2 =	11070000

Status	Date	User	Residue	Shift	Software
Verified	2012-12-17	Jon Pace	69CC51E20E0DAC4C	12269505	Windows 64-bit,Prime95,v27.7,build 2
Verified	2021-07-30	Dubslow	69CC51E20E0DAC4C	52453070	Linux 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2021-07-30	Dubslow	C-LL	69CC51E20E0DAC4C
2021-07-21	frederikhk	NF	no factor TF: 74-75
2019-02-03	TheJudger	NF	no factor TF: 73-74
2016-02-23	Mark Rose	NF	no factor TF: 60-63
2012-12-17	Jon Pace	C-LL	69CC51E20E0DAC4C
2012-10-29	S485122	NF-PM1	B1=540000, B2=11070000, E=6
2012-09-07	Craig Meyers	NF	no factor TF: 72-73
2012-05-29	Kyle Askine	NF	no factor TF: 71-72
2011-06-22	steinrar	NF	no factor TF: 70-71
2011-06-22	steinrar	NF	no factor TF: 69-70
2011-05-09	Aronga	NF	no factor TF: 68-69
2009-06-02	BroadoakMathsClub	NF	no factor TF: 67-68
2008-10-26	Sturle Sunde	NF	no factor TF: 66-67
2008-10-26	Sturle Sunde	NF	no factor TF: 65-66
2008-10-25	Sturle Sunde	NF	no factor TF: 64-65
2008-10-25	Sturle Sunde	NF	no factor TF: 63-64
2003-11-08	Team Prime Rib	NF	no factor TF: 1-60
2002-11-24	-anonymous-	NF	no factor TF: 1-58
2001-09-30	-anonymous-	NF	no factor TF: 1-57
2000-06-23	-anonymous-	NF	no factor TF: 1-56
2000-03-08	-anonymous-	NF	no factor TF: 1-54
1999-12-23	-anonymous-	NF	no factor TF: 1-53

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