3 152 749 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
846818549540559412207	21	69.5	2019-02-17 05:08:33

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)		Ken Kriesel	031DE78094F68069	0
Verified (Factored)	1999-06-15	C. Cooper / S. Boone	031DE78094F68069	1780743

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-02-18	oodaira	DB896F0DE9D119B0	1	2124056	5	3
Verified	2019-02-19	kkmrkkblmbrbk	DB896F0DE9D119B0	1	2789166	5	3

History

Date	User	Type	Result
2022-09-07	Joss	NF-PM1	B1=1065274, B2=226749600
2022-01-24	Joss	NF-PM1	B1=1065274, B2=119912100
2021-01-16	Joss	NF-PM1	B1=315274, B2=3152749, E=6
2021-01-08	Joss	NF	no factor from 2^68 to 2^69
2019-02-19	kkmrkkblmbrbk	C-PRP	M3152749/846818549540559412207 : DB896F0DE9D119B0 PRP: Verified PRP without proof (not generated)
2019-02-18	oodaira	C-PRP	M3152749/846818549540559412207 : DB896F0DE9D119B0 PRP: Verified PRP without proof (not generated)
2019-02-17	furkell	F-ECM	Factor: 846818549540559412207 / (ECM curve 3, B1=50000, B2=5000000)
2019-02-04	TJAOI	NF	no factor from 2^67 to 2^68
2017-04-22	Gordon Spence	NF	no factor from 2^66 to 2^67
2015-11-24	HBendtz	NF-PM1	B1=500000, B2=12000000, e=12
2015-06-17	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
2013-09-04	Squeeky_Squirrel	NF-PM1	B1=110000, B2=2502500, E=6
2013-01-03	dbaugh	NF	no factor from 2^62 to 2^63
2011-11-03	markr	NF	no factor to 2^62
2011-09-07	Squeeky_Squirrel	NF-PM1	B1=55000, B2=948750, E=6
2009-04-11	S485122	NF	no factor from 2^60 to 2^61