1 799 591 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
669880033432520511787647599	27	89.1	2019-11-25 14:52:02

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Paul F. Bird	F19013D0647C6084	0
Verified (Factored)	1999-06-15	Mark Jones	F19013D0647C6084	917967
Verified (Factored)	2015-07-18	MadPoo	F19013D0647C6084	1793556

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-11-25	mnd9	974E374BDCCD0C2B	1	432341	5	3
Verified	2019-11-25	ATH	974E374BDCCD0C2B	1	838784	5	3

History

Date	User	Type	Result
2019-11-25	ATH	C-PRP	M1799591/669880033432520511787647599 : 974E374BDCCD0C2B PRP: Verified PRP without proof (not generated)
2019-11-25	mnd9	C-PRP	M1799591/669880033432520511787647599 : 974E374BDCCD0C2B PRP: Verified PRP without proof (not generated)
2019-11-25	Sergey Nosov	F-ECM	Factor: 669880033432520511787647599 / (ECM curve 2, B1=50000, B2=5000000)
2019-06-10	TJAOI	NF	no factor from 2^67 to 2^68
2018-09-17	Joss	NF-PM1	B1=1799591, B2=179959100, E=12
2017-04-24	TJAOI	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^62
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-09-13	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-18	MadPoo	C-LL	F19013D0647C6084
2015-06-18	mikr	NF-PM1	B1=2475400, B2=86660000, E=12
2015-05-15	snme2pm1	NF	no factor from 2^64 to 2^65
2015-05-15	snme2pm1	NF	no factor from 2^63 to 2^64
2014-09-19	Joss	NF-PM1	B1=171332
2014-05-09	Joss	NF-PM1	B1=135666
2011-02-07	Carsten Kossendey	NF-PM1	B1=100000, B2=1650000, E=6
2010-12-13	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-20	Architects Cubed	NF	no factor from 2^60 to 2^61