3 749 399 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
470525858927251911645767	24	78.6	2015-11-28 03:09:23

ECM

Digits	B1	Curves
25	50000	6 / 280

Estimated T-Level: 20.1 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)	1998-02-24	Lawrence E. Wild	C07181D08133D302	0
Verified (Factored)	1999-08-16	Manuel J. Galan	C07181D08133D302	2694640

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-20	kkmrkkblmbrbk	09A26A5C4667A3AA	1	0	1	3
Verified	2017-12-04	Oliver Kruse	09A26A5C4667A3AA	1	588206	1	3

P-1 factors

Date	Factor	B1	B2
2015-11-28	470525858927251911645767	1600000	66000000

History

Date	User	Type	Result
2022-05-24	Joss	NF-PM1	B1=200000, B2=130364850
2017-12-04	Oliver Kruse	C-PRP	M3749399/470525858927251911645767 : 09A26A5C4667A3AA PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M3749399/470525858927251911645767 : 09A26A5C4667A3AA PRP: Verified PRP without proof (not generated)
2015-11-28	mikr	F-PM1	Factor: 470525858927251911645767 / (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
2013-03-15	Squeeky_Squirrel	NF-PM1	B1=110000, B2=2035000, E=6
2012-05-10	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-05-02	markr	NF	no factor to 2^62
2009-07-07	Carsten Kossendey	NF-PM1	B1=20000, B2=265000
2009-03-04	S485122	NF	no factor from 2^60 to 2^61