75 256 669 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 2⁷⁶

TF target 2⁷⁴

P-1

B1 =	655000
B2 =	13100000

Status	Date	User	Residue	Shift	Software
Bad	2016-06-01	Dorod	6F7FCE079BFEC8F1	5334888	Windows 64-bit,Prime95,v28.9,build 2
Verified	2016-11-23	endless_mike	7576F7F8760C5BC5	70116435	Windows 64-bit,Prime95,v28.9,build 2
Verified	2017-01-04	MadPoo 🙂	7576F7F8760C5BC5	61653553	Windows 64-bit,Prime95,v26,(aka We4)

History

Date	User	Type	Result
2020-05-23	-anonymous-	NF	no factor TF: 75-76
2017-01-04	MadPoo 🙂	C-LL	7576F7F8760C5BC5
2016-11-23	endless_mike	C-LL	7576F7F8760C5BC5
2016-06-01	Dorod	C-LL	6F7FCE079BFEC8F1
2016-01-17	TheJudger	NF-PM1	B1=655000, B2=13100000, E=12
2016-01-10	TheJudger	NF	no factor TF: 74-75
2016-01-10	TheJudger	NF	no factor TF: 73-74
2016-01-02	Bdot	NF	no factor TF: 72-73
2015-09-02	Judge Hale	NF	no factor TF: 71-72
2013-07-08	SMoffat	NF	no factor TF: 70-71
2013-05-17	JMGarcia	NF	no factor TF: 69-70
2011-01-10	eon_blue_apocalypse	NF	no factor TF: 68-69
2011-01-07	eon_blue_apocalypse	NF	no factor TF: 67-68
2011-01-03	scrolllock	NF	no factor TF: 66-67
2010-12-29	root_slater	NF	no factor TF: 65-66
2010-10-23	Jordi Sentmenat	NF	no factor TF: 64-65
2005-02-12	Marzbug	NF	no factor TF: 1-64
2003-09-21	Marzbug	NF	no factor TF: 1-63