75 087 241 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	2016-12-12	Mucki	2D27C28594B4670A	26106788	Windows,Prime95,v28.7,build 1
Verified	2025-02-12	Dmitriy Degtiarev	2D27C28594B4670A	20306161	Linux 64-bit,Prime95,v30.3,build 6

History

Date	User	Type	Result
2025-02-12	Dmitriy Degtiarev	C-LL	2D27C28594B4670A
2016-12-12	Mucki	C-LL	2D27C28594B4670A
2016-03-11	dh1	NF	no factor TF: 74-75
2015-09-27	TheJudger	NF-PM1	B1=695000, B2=14595000, E=12
2015-09-16	James Heinrich	NF	no factor TF: 72-74
2014-01-06	g0b	NF	no factor TF: 71-72
2013-07-07	processinfo	NF	no factor TF: 70-71
2013-05-18	PED	NF	no factor TF: 69-70
2010-08-18	bigaldepr	NF	no factor TF: 68-69
2010-08-11	SAHS Physics Club	NF	no factor TF: 67-68
2010-08-08	Wojciech Tarczynski	NF	no factor TF: 66-67
2010-07-30	-anonymous-	NF	no factor TF: 65-66
2004-12-23	Marzbug	NF	no factor TF: 1-65
2004-09-02	Marzbug	NF	no factor TF: 1-65
2004-07-26	Marzbug	NF	no factor TF: 1-65