55 474 831 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

TF

No factors below 2⁷³

TF target 2⁷³

P-1

B1 =	550000
B2 =	11687500

Status	Date	User	Residue	Shift
Bad	2012-11-23	C.D.B.	A0DCA7FBB3F8830F	17969281
Verified	2013-08-16	-Anonymous-	9F1113C9851F6CA6	7784230
Verified	2016-09-21	AirSquirrels	9F1113C9851F6CA6	33489312

History

Date	User	Type	Result
2016-09-21	AirSquirrels	C-LL	9F1113C9851F6CA6
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^63
2015-07-29	Mark Rose	NF	no factor from 2^72 to 2^73
2013-08-16	-Anonymous-	C-LL	9F1113C9851F6CA6
2012-11-23	C.D.B.	C-LL	A0DCA7FBB3F8830F
2012-04-22	TheJudger	NF-PM1	B1=550000, B2=11687500, E=6
2012-04-09	Kevin Jaget	NF	no factor from 2^70 to 2^72
2011-06-06	-Anonymous-	NF	no factor from 2^69 to 2^70
2011-04-09	tmorrow	NF	no factor from 2^68 to 2^69
2009-05-20	carlos1	NF	no factor from 2^67 to 2^68
2009-01-12	David Hruska	NF	no factor from 2^66 to 2^67
2009-01-10	David Hruska	NF	no factor from 2^65 to 2^66
2009-01-07	David Barley	NF	no factor from 2^64 to 2^65
2009-01-05	1997rj7	NF	no factor from 2^63 to 2^64