3 049 153 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
195987605034709910433452273783	30	97.3	2017-09-20 06:05:18

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)		Peter H.M. Cools	FE62DC1B4B28789D	0
Verified (Factored)	1999-05-30	Dennis Williamson	FE62DC1B4B28789D	271971

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-28	Oliver Kruse	DA927EB2DB4A7363	1	1164615	5	3
Verified	2017-12-11	kkmrkkblmbrbk	DA927EB2DB4A7363	1	2537366	5	3

P-1 factors

Date	Factor	B1	B2
2017-09-20	195987605034709910433452273783	3000000	100000000

History

Date	User	Type	Result
2022-08-31	Joss	NF-PM1	B1=3049153, B2=354763500
2022-01-06	Joss	NF-PM1	B1=1473755, B2=116447100
2021-02-26	Joss	NF	no factor from 2^67 to 2^68
2021-02-18	Joss	NF	no factor from 2^66 to 2^67
2021-02-18	Joss	NF	no factor from 2^65 to 2^66
2020-09-02	Joss	NF-PM1	B1=536668, B2=6098306, E=6
2017-12-11	kkmrkkblmbrbk	C-PRP	M3049153/195987605034709910433452273783 : DA927EB2DB4A7363 PRP: Verified PRP without proof (not generated)
2017-10-28	Oliver Kruse	C-PRP	M3049153/195987605034709910433452273783 : DA927EB2DB4A7363 PRP: Verified PRP without proof (not generated)
2017-09-20	mikr	F-PM1	Factor: 195987605034709910433452273783 / (P-1, B1=3000000, B2=100000000, E=12)
2017-05-06	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-03-14	Squeeky_Squirrel	NF-PM1	B1=205000, B2=5688750, 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
2010-11-13	Sid & Andy	NF	no factor from 2^61 to 2^62
2010-10-04	markr	NF-PM1	B1=110000, B2=2447500, E=6
2009-02-14	Sturle Sunde	NF	no factor from 2^60 to 2^61