3 066 097 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
766253494200285821476655143	27	89.3	2017-12-15 14:43:16

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)		Henning Lebius	D579AD49E5DD4238	0
Verified (Factored)	1999-07-26	richard patchett	D579AD49E5DD4238	2070243

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-12-17	Oliver Kruse	4CE560C8AB90B3F4	1	644904	5	3
Verified	2017-12-18	kkmrkkblmbrbk	4CE560C8AB90B3F4	1	2043400	5	3

P-1 factors

Date	Factor	B1	B2
2017-12-15	766253494200285821476655143	3000000	100000000

History

Date	User	Type	Result
2022-09-03	Joss	NF-PM1	B1=1209912, B2=223284600
2022-01-06	Joss	NF-PM1	B1=1209912, B2=116447100
2021-04-10	Joss	NF	no factor from 2^67 to 2^68
2020-06-03	Joss	NF-PM1	B1=306609, B2=3066097, E=6
2017-12-18	kkmrkkblmbrbk	C-PRP	M3066097/766253494200285821476655143 : 4CE560C8AB90B3F4 PRP: Verified PRP without proof (not generated)
2017-12-17	Oliver Kruse	C-PRP	M3066097/766253494200285821476655143 : 4CE560C8AB90B3F4 PRP: Verified PRP without proof (not generated)
2017-12-15	mikr	F-PM1	Factor: 766253494200285821476655143 / (P-1, B1=3000000, B2=100000000, E=12)
2017-05-09	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-03-28	Squeeky_Squirrel	NF-PM1	B1=205000, B2=5996250, E=12
2015-06-06	Tha	NF	no factor from 2^65 to 2^66
2015-02-07	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-07	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-07	dbaugh	NF	no factor from 2^62 to 2^63
2011-10-14	Sid & Andy	NF	no factor from 2^61 to 2^62
2010-09-24	markr	NF-PM1	B1=110000, B2=2447500, E=6
2009-02-14	Sturle Sunde	NF	no factor from 2^60 to 2^61