2 606 939 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
59958972393312714023	20	65.7	2015-12-14 14:14:30

ECM

Digits	B1	Curves
25	50000	14 / 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)		Rich Harms	44C06B0A93EAF73A	0
Verified (Factored)	1999-04-13	Brian	44C06B0A93EAF73A	1449438

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-30	alpertron	CA21712F19DD5A75	1	0	1	3
Verified	2017-11-13	Oliver Kruse	CA21712F19DD5A75	1	1338926	1	3

History

Date	User	Type	Result
2022-03-11	LordJulius	NF	no factor from 2^1 to 2^60
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-13	Oliver Kruse	C-PRP	M2606939/59958972393312714023 : CA21712F19DD5A75 PRP: Verified PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M2606939/59958972393312714023 : CA21712F19DD5A75 PRP: Verified PRP without proof (not generated)
2015-12-14	guru	F-ECM	Factor: 59958972393312714023 / (ECM curve 2, B1=50000, B2=5000000)
2015-02-18	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-18	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-10	Joss	NF-PM1	B1=124621
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-24	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2010-12-15	markr	NF-PM1	B1=100000, B2=2125000, E=6
2010-11-16	Joss	NF-PM1	B1=20000
2009-01-27	Sturle Sunde	NF	no factor from 2^60 to 2^61