2 577 907 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
4690647066487777771079894023	28	91.9	2016-07-09 08:38:41

ECM

Digits	B1	Curves
25	50000	18 / 280

Estimated T-Level: 20.3 ⓘ

TF below 2^63 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Michael B. Clark	3C53EF21914D5A30	0
Verified (Factored)	1999-03-26	Ethan Hansen	3C53EF21914D5A30	606119

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-15	Oliver Kruse	D4B47BE40706F8A1	1	986520	5	3
Verified	2017-12-02	kkmrkkblmbrbk	D4B47BE40706F8A1	1	666942	5	3

P-1 factors

Date	Factor	B1	B2
2016-07-09	4690647066487777771079894023	3200000	112000000

History

Date	User	Type	Result
2017-12-02	kkmrkkblmbrbk	C-PRP	M2577907/4690647066487777771079894023 : D4B47BE40706F8A1 PRP: Verified PRP without proof (not generated)
2017-10-15	Oliver Kruse	C-PRP	M2577907/4690647066487777771079894023 : D4B47BE40706F8A1 PRP: Verified PRP without proof (not generated)
2016-07-09	mikr	F-PM1	Factor: 4690647066487777771079894023 / (P-1, B1=3200000, B2=112000000, E=12)
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2015-11-08	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-27	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-27	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-19	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-10-09	markr	NF-PM1	B1=175000, B2=4112500, E=6
2011-01-11	Joss	NF-PM1	B1=50000
2010-12-21	Joss	NF-PM1	B1=20000
2009-01-30	Sturle Sunde	NF	no factor from 2^60 to 2^61