40 010 611 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 2⁷⁴

TF target 2⁷²

P-1

B1 =	480000
B2 =	13200000

Status	Date	User	Residue	Shift	Software
Verified	2007-11-17	Michael Schiansky	BC644962B8F0D927	11370823	Linux 32-bit,Prime95,v24 final,(aka Wc2)
Verified	2017-05-14	Dubslow	BC644962B8F0D927	17046280	Linux 64-bit,Prime95,v28.7,build 1

History

Date	User	Type	Result
2020-02-14	-anonymous-	NF	no factor TF: 73-74
2019-10-04	-anonymous-	NF	no factor TF: 72-73
2017-05-14	Dubslow	C-LL	BC644962B8F0D927
2014-12-30	ktony	NF	no factor TF: 71-72
2014-11-25	srow7	NF	no factor TF: 70-71
2014-11-23	Architects Cubed	NF	no factor TF: 69-70
2013-10-19	Torben K.	NF	no factor TF: 68-69
2007-11-17	Stefan Rink	C-LL	BC644962B8F0D927
2007-09-28	Stefan Rink	NF-PM1	B1=480000, B2=13200000
2006-12-18	-anonymous-	NF	no factor TF: 1-68
2003-11-16	-anonymous-	NF	no factor TF: 1-61
2000-12-31	Joss	NF	no factor TF: 1-60