75 076 549 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 =	765000
B2 =	20846250

Status	Date	User	Residue	Shift	Software
Verified	2014-12-21	arnaud	FE29B3A179551F85	70061249	Windows,Prime95,v28.5,build 2
Verified	2025-02-06	Dmitriy Degtiarev	FE29B3A179551F85	50004926	Linux 64-bit,Prime95,v30.3,build 6

History

Date	User	Type	Result
2025-02-06	Dmitriy Degtiarev	C-LL	FE29B3A179551F85
2016-05-24	monst	NF	no factor TF: 74-75
2015-01-06	Jerry Hallett	NF	no factor TF: 73-74
2014-12-21	arnaud	C-LL	FE29B3A179551F85
2014-10-26	Craig Meyers	NF-PM1	B1=765000, B2=20846250, E=6
2013-12-27	processinfo	NF	no factor TF: 72-73
2013-12-27	processinfo	NF	no factor TF: 71-72
2013-12-27	processinfo	NF	no factor TF: 70-71
2013-10-28	SMoffat	NF	no factor TF: 69-70
2010-10-11	Per Jessen	NF	no factor TF: 68-69
2010-10-07	Helmut Zulus	NF	no factor TF: 67-68
2010-10-02	Helmut Zulus	NF	no factor TF: 66-67
2010-09-29	Helmut Zulus	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