74 574 139 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷⁵

TF target 2⁷⁴

P-1

B1 =	620000
B2 =	12555000

Status	Date	User	Residue	Shift	Software
Bad	2016-10-03	SithWizard	B773FE74547074F5	4053015	Windows 64-bit,Prime95,v28.9,build 2
Verified	2016-11-19	endless_mike	A8587A3BE9ED8D63	7252969	Windows 64-bit,Prime95,v28.9,build 2
Verified	2017-01-02	MadPoo 🙂	A8587A3BE9ED8D63	27915689	Windows 64-bit,Prime95,v26,(aka We4)

History

Date	User	Type	Result
2017-01-02	MadPoo 🙂	C-LL	A8587A3BE9ED8D63
2016-11-19	endless_mike	C-LL	A8587A3BE9ED8D63
2016-10-03	SithWizard	C-LL	B773FE74547074F5
2016-04-01	Mark Rose	NF	no factor TF: 57-64
2016-01-17	bam	NF-PM1	B1=620000, B2=12555000
2015-11-09	BigBrother	NF	no factor TF: 74-75
2015-11-09	BigBrother	NF	no factor TF: 73-74
2015-10-23	Judge Hale	NF	no factor TF: 72-73
2015-08-23	Chuck	NF	no factor TF: 71-72
2012-12-08	SMoffat	NF	no factor TF: 70-71
2012-10-19	SMoffat	NF	no factor TF: 69-70
2011-02-24	vapaddy	NF	no factor TF: 68-69
2011-02-10	eon_blue_apocalypse	NF	no factor TF: 67-68
2011-02-06	eon_blue_apocalypse	NF	no factor TF: 66-67
2011-02-03	Tom Bammann	NF	no factor TF: 65-66
2010-07-10	Bold_Seeker	NF	no factor TF: 64-65
2002-03-31	Joss	NF	no factor TF: 1-57