75 106 729 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 =	655000
B2 =	13100000

Status	Date	User	Residue	Shift	Software
Verified	2016-01-11	SD235	2107827D0D5ECF9F	64651326	Mac OS X 64-bit,Prime95,v28.7,build 1
Verified	2025-03-17	Dmitriy Degtiarev	2107827D0D5ECF9F	44286005	Linux 64-bit,Prime95,v30.3,build 6

History

Date	User	Type	Result
2025-03-17	Dmitriy Degtiarev	C-LL	2107827D0D5ECF9F
2016-01-11	SD235	C-LL	2107827D0D5ECF9F
2015-12-03	HardyP Germany	NF-PM1	B1=655000, B2=13100000, E=6
2015-11-08	AirSquirrels	NF	no factor TF: 74-75
2015-11-08	AirSquirrels	NF	no factor TF: 73-74
2015-11-08	AirSquirrels	NF	no factor TF: 72-73
2014-02-11	-anonymous-	NF	no factor TF: 71-72
2013-07-10	processinfo	NF	no factor TF: 70-71
2013-05-22	oilwarzonedotcom	NF	no factor TF: 69-70
2010-10-10	medikit	NF	no factor TF: 68-69
2010-10-06	medikit	NF	no factor TF: 67-68
2010-08-01	Bold_Seeker	NF	no factor TF: 66-67
2010-08-01	Purnendu	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
2004-08-20	Marzbug	NF	no factor TF: 1-65
2004-04-20	Marzbug	NF	no factor TF: 1-63
2003-06-06	Marzbug	NF	no factor TF: 1-63