44 255 971 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 2⁷³

TF target 2⁷²

P-1

B1 =	510000
B2 =	9817500

Status	Date	User	Residue	Shift	Software
Verified	2009-03-02	Kyle Z Schmidt	A2421AD65253BF0E	9670029	Windows,Prime95,v24 final,(aka Wc1)
Verified	2017-01-12	motsu	A2421AD65253BF0E	43112215	Windows 64-bit,Prime95,v28.10,build 1

History

Date	User	Type	Result
2018-05-08	Robin89	NF	no factor TF: 72-73
2017-01-12	motsu	C-LL	A2421AD65253BF0E
2015-10-09	-anonymous-	NF	no factor TF: 71-72
2015-08-28	ixfd64	NF	no factor TF: 70-71
2015-06-23	Bdot	NF	no factor TF: 69-70
2014-03-01	LaurV	NF	no factor TF: 68-69
2009-03-02	Kyle Z Schmidt	C-LL	A2421AD65253BF0E
2009-01-18	Kyle Z Schmidt	NF-PM1	B1=510000, B2=9817500
2007-10-17	precius1	NF	no factor TF: 1-68