1 744 927 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
1852241228593335787280458631	28	90.6	2015-04-18 13:28:35

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Ed Knapton	7883C7FBA0F0B3F7	0
Verified (Factored)	1998-12-06	Peter J. Misurek	7883C7FBA0F0B3F7	901587

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-03	Oliver Kruse	56C0D388B35AAD86	1	0	1	3
Verified	2017-11-03	srow7	56C0D388B35AAD86	1	1012944	1	3

P-1 factors

Date	Factor	B1	B2
2015-04-18	1852241228593335787280458631	2475400	0

History

Date	User	Type	Result
2017-11-03	srow7	C-PRP	M1744927/1852241228593335787280458631 : 56C0D388B35AAD86 PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1744927/1852241228593335787280458631 : 56C0D388B35AAD86 PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2015-04-18	mikr	F-PM1	Factor: 1852241228593335787280458631 / (P-1, B1=2475400)
2014-09-15	-Anonymous-	NF-PM1	B1=173566
2014-05-06	Joss	NF-PM1	B1=136783
2014-04-05	Joss	NF-PM1	B1=100000
2011-02-07	Carsten Kossendey	NF-PM1	B1=95000, B2=1543750, E=6
2010-11-18	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-23	Architects Cubed	NF	no factor from 2^60 to 2^61