3 129 811 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
8249979105196572503856721	25	82.8	2018-07-14 20:41:35

ECM

Digits	B1	Curves
25	50000	15 / 280

Estimated T-Level: 20.3 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Stephen Cohoon	3478DE500706C53B	0
Verified (Factored)	1999-05-23	Sam Robertson	3478DE500706C53B	1387292

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-07-14	ATH	B459CEE0CEF2D507	1	446871	5	3
Verified	2018-07-15	Oliver Kruse	B459CEE0CEF2D507	1	2035910	5	3

P-1 factors

Date	Factor	B1	B2
2018-07-14	8249979105196572503856721	692144	1384288

History

Date	User	Type	Result
2021-12-22	Joss	NF-PM1	B1=3129811, B2=637437570
2021-12-19	Joss	NF-PM1	B1=3129811, B2=108997350
2021-11-22	Joss	NF-PM1	B1=3129811
2021-02-25	Joss	NF	no factor from 2^67 to 2^68
2021-01-03	Joss	NF	no factor from 2^65 to 2^66
2018-07-15	Oliver Kruse	C-PRP	M3129811/8249979105196572503856721 : B459CEE0CEF2D507 PRP: Verified PRP without proof (not generated)
2018-07-14	ATH	C-PRP	M3129811/8249979105196572503856721 : B459CEE0CEF2D507 PRP: Verified PRP without proof (not generated)
2018-07-14	Joss	F-PM1	Factor: 8249979105196572503856721 / (P-1, B1=692144, B2=1384288, E=4)
2017-04-15	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-10-01	Squeeky_Squirrel	NF-PM1	B1=195000, B2=5460000, E=12
2015-06-14	Tha	NF	no factor from 2^65 to 2^66
2015-02-11	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-11	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-03	dbaugh	NF	no factor from 2^62 to 2^63
2011-11-12	markr	NF	no factor from 2^61 to 2^62
2011-08-30	Squeeky_Squirrel	NF-PM1	B1=105000, B2=2152500, E=6
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=183750
2009-04-11	S485122	NF	no factor from 2^60 to 2^61