5 897 279 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
660060879420596631919	21	69.2	2011-07-04 18:31:23

ECM

Digits	B1	Curves
25	50000	1 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^61 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-10-04	Alan Vidmar	2F10D02359E86A5E	0
Verified (Factored)	2001-05-20	Martin Koster	2F10D02359E86A5E	271928

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-20	kkmrkkblmbrbk	A9D94A54206C2634	1	0	1	3
Verified	2018-09-08	ATH	A9D94A54206C2634	1	16849	1	3

History

Date	User	Type	Result
2018-09-08	ATH	C-PRP	M5897279/660060879420596631919 : A9D94A54206C2634 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M5897279/660060879420596631919 : A9D94A54206C2634 PRP: Verified PRP without proof (not generated)
2011-07-04	James Heinrich	F-ECM	Factor: 660060879420596631919
2011-03-07	USAFSS	NF-PM1	B1=65000, B2=1105000, E=6
2009-02-13	GrunwalderGIMP	NF	no factor from 2^62 to 2^63