75 694 397 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 =	660000
B2 =	12540000

Status	Date	User	Residue	Shift	Software
Bad	2016-05-21	-anonymous-	DC5070672FB3A273	68544819	Windows,Prime95,v27.9,build 1
Verified	2016-11-28	endless_mike	3C8C2FD46A728245	73051106	Windows 64-bit,Prime95,v28.9,build 2
Verified	2017-01-12	MadPoo 🙂	3C8C2FD46A728245	38483075	Windows 64-bit,Prime95,v26,(aka We4)

History

Date	User	Type	Result
2017-01-12	MadPoo 🙂	C-LL	3C8C2FD46A728245
2016-11-28	endless_mike	C-LL	3C8C2FD46A728245
2016-05-21	-anonymous-	C-LL	DC5070672FB3A273
2015-03-22	Ram Shanker	NF-PM1	B1=660000, B2=12540000
2013-05-31	Justin	NF	no factor TF: 74-75
2013-05-31	Justin	NF	no factor TF: 73-74
2013-05-31	Justin	NF	no factor TF: 72-73
2013-05-31	Justin	NF	no factor TF: 71-72
2013-05-31	Justin	NF	no factor TF: 70-71
2010-10-30	seekua	NF	no factor TF: 69-70
2010-10-27	seekua	NF	no factor TF: 68-69
2010-10-24	seekua	NF	no factor TF: 67-68
2010-10-22	-anonymous-	NF	no factor TF: 66-67
2010-10-15	Michael Hanscho	NF	no factor TF: 65-66
2010-10-12	Michael Hanscho	NF	no factor TF: 64-65
2009-06-23	Sid & Andy	NF	no factor TF: 63-64
2004-08-20	Marzbug	NF	no factor TF: 1-63