1 772 011 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
240844879700459797723758047	27	87.6	2015-05-15 23:13:06

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)		Kevin Postlewaite	84CA545F02B2690D	0
Verified (Factored)	1998-12-06	Michael Boss	84CA545F02B2690D	1013614

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-03	Oliver Kruse	E892C2E774023D27	1	0	1	3
Verified	2017-11-04	ATH	E892C2E774023D27	1	1006664	1	3

P-1 factors

Date	Factor	B1	B2
2015-05-15	240844879700459797723758047	2475400	0

History

Date	User	Type	Result
2017-11-04	ATH	C-PRP	M1772011/240844879700459797723758047 : E892C2E774023D27 PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1772011/240844879700459797723758047 : E892C2E774023D27 PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2015-05-15	mikr	F-PM1	Factor: 240844879700459797723758047 / (P-1, B1=2475400)
2015-05-01	snme2pm1	NF	no factor from 2^64 to 2^65
2015-05-01	snme2pm1	NF	no factor from 2^63 to 2^64
2014-09-18	Joss	NF-PM1	B1=172442
2014-05-09	Joss	NF-PM1	B1=136221
2014-04-10	-Anonymous-	NF-PM1	B1=100000
2011-02-07	Carsten Kossendey	NF-PM1	B1=95000, B2=1615000, E=6
2010-12-13	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-20	Architects Cubed	NF	no factor from 2^60 to 2^61