5 760 121 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
773690578263089092841	21	69.4	2018-01-12 05:09:56

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)	1998-09-20	Gary Hanson	751C8A09DE4C4CBA	0
Verified (Factored)	2001-02-25	Stephen Wood	751C8A09DE4C4CBA	2339175

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-01-15	Oliver Kruse	D9FF1623873019F2	1	1781028	5	3
Verified	2018-04-15	kkmrkkblmbrbk	D9FF1623873019F2	1	1068965	5	3

P-1 factors

Date	Factor	B1	B2
2018-01-12	773690578263089092841	345000	10350000

History

Date	User	Type	Result
2018-04-15	kkmrkkblmbrbk	C-PRP	M5760121/773690578263089092841 : D9FF1623873019F2 PRP: Verified PRP without proof (not generated)
2018-01-15	Oliver Kruse	C-PRP	M5760121/773690578263089092841 : D9FF1623873019F2 PRP: Verified PRP without proof (not generated)
2018-01-12	Squeeky_Squirrel	F-PM1	Factor: 773690578263089092841 / (P-1, B1=345000, B2=10350000, E=12)
2016-07-04	Gordon Spence	NF	no factor from 2^66 to 2^67
2015-09-08	snme2pm1	NF	no factor from 2^65 to 2^66
2014-10-28	lycorn	NF	no factor from 2^64 to 2^65
2014-10-28	Nesowa	NF	no factor from 2^63 to 2^64
2011-04-16	USAFSS	NF-PM1	B1=65000, B2=1088750, E=6
2009-03-29	GrunwalderGIMP	NF	no factor from 2^62 to 2^63