3 773 087 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
1399538418567633556475666497	28	90.2	2016-02-19 12:11:03

ECM

Digits	B1	Curves
25	50000	9 / 280

Estimated T-Level: 20.2 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Dax Prather	6C014F835FAF6ED0	0
Bad		Anthony Breimeris	0966C777C498AFA2	0
Verified (Factored)	1999-10-15	Jeremy Goulstone	6C014F835FAF6ED0	1119111

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-20	kkmrkkblmbrbk	03B1F8AE064AA3D3	1	0	1	3
Verified	2017-12-07	Oliver Kruse	03B1F8AE064AA3D3	1	1874564	1	3

P-1 factors

Date	Factor	B1	B2
2016-02-19	1399538418567633556475666497	1600000	66000000

History

Date	User	Type	Result
2022-05-24	Joss	NF-PM1	B1=100000, B2=130364850
2022-03-22	Joss	NF-PM1	B1=100000
2022-03-05	Joss	NF-PM1	B1=90000
2017-12-07	Oliver Kruse	C-PRP	M3773087/1399538418567633556475666497 : 03B1F8AE064AA3D3 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M3773087/1399538418567633556475666497 : 03B1F8AE064AA3D3 PRP: Verified PRP without proof (not generated)
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2016-02-19	mikr	F-PM1	Factor: 1399538418567633556475666497 / (P-1, B1=1600000, B2=66000000, E=12)
2015-01-25	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-25	VictordeHollander	NF	no factor from 2^63 to 2^64
2012-04-10	Squeeky_Squirrel	NF-PM1	B1=110000, B2=2035000, E=6
2012-03-23	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-04-17	markr	NF	no factor to 2^62
2009-07-13	Carsten Kossendey	NF-PM1	B1=20000, B2=265000
2009-03-02	S485122	NF	no factor from 2^60 to 2^61