2 789 747 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
176924187497116286233	21	67.3	2015-03-20 02:06:01

ECM

Digits	B1	Curves
25	50000	114 / 280

Estimated T-Level: 22.0 ⓘ

TF below 2^68 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Michael Carpenter	0B57C7DA418CA73B	0
Verified (Factored)	1999-06-26	Scott Semanision	0B57C7DA418CA73B	679992

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-21	Oliver Kruse	9EB914D5095383D0	1	256900	5	3
Verified	2017-12-06	kkmrkkblmbrbk	9EB914D5095383D0	1	382531	5	3

History

Date	User	Type	Result
2023-01-27	USAFSS	NF-PM1	B1=288000, B2=261254070
2017-12-06	kkmrkkblmbrbk	C-PRP	M2789747/176924187497116286233 : 9EB914D5095383D0 PRP: Verified PRP without proof (not generated)
2017-10-21	Oliver Kruse	C-PRP	M2789747/176924187497116286233 : 9EB914D5095383D0 PRP: Verified PRP without proof (not generated)
2015-03-20	Jason U	F-ECM	Factor: 176924187497116286233 / (ECM curve 2, B1=50000, B2=5000000)
2014-11-01	Joss	NF-PM1	B1=123007
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-03-05	markr	NF	no factor from 2^61 to 2^62
2010-11-23	markr	NF-PM1	B1=100000, B2=2075000, E=6
2010-11-11	Joss	NF-PM1	B1=15000
2009-01-29	Sturle Sunde	NF	no factor from 2^60 to 2^61