75 077 867 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 =	695000
B2 =	14595000

Status	Date	User	Residue	Shift	Software
Verified	2016-02-13	KC	198A12B4DD8D49E2	1456462	Windows Service,Prime95,v28.7,build 1
Verified	2025-02-02	Pavel Bogdanov	198A12B4DD8D49E2	72409004	Windows 64-bit,Prime95,v30.19,build 20

History

Date	User	Type	Result
2025-02-02	Pavel Bogdanov	C-LL	198A12B4DD8D49E2
2016-02-13	KC	C-LL	198A12B4DD8D49E2
2015-11-12	dragonbud20	NF	no factor TF: 74-75
2015-08-30	TheJudger	NF-PM1	B1=695000, B2=14595000, E=12
2015-08-27	endless_mike	NF	no factor TF: 73-74
2015-08-27	endless_mike	NF	no factor TF: 72-73
2015-08-27	endless_mike	NF	no factor TF: 71-72
2014-03-02	ANONYMOUS	NF	no factor TF: 70-71
2012-12-06	JeffreyH-8	NF	no factor TF: 69-70
2010-10-13	mgdavilaINE	NF	no factor TF: 68-69
2010-10-05	seekua	NF	no factor TF: 67-68
2010-10-01	seekua	NF	no factor TF: 66-67
2010-09-28	seekua	NF	no factor TF: 65-66
2004-12-23	Marzbug	NF	no factor TF: 1-65
2004-07-02	Marzbug	NF	no factor TF: 1-65