717 127 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
497483883486558400823	21	68.8	2008-06-23 03:54:36

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	100 / 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)		Ken Kriesel	B5520D2AEF905597	0
Verified (Factored)		Simon Burge	B5520D2AEF905597	0
Verified (Factored)	2003-02-24	Brian J. Beesley	B5520D2AEF905597	522271

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-27	Oliver Kruse	646FAC090F9AD56A	1	0	1	3
Verified	2017-10-13	Oliver Kruse	646FAC090F9AD56A	1	258411	1	3
Verified	2017-12-16	ATH	646FAC090F9AD56A	1	29422	1	3
Unverified (Reliable)	2020-04-20	Oliver Kruse	5ECB78CF48450C__	1	55404	5	3

History

Date	User	Type	Result
2022-12-30	USAFSS	NF-PM1	B1=1500000, B2=4029468300
2020-04-20	Oliver Kruse	C-PRP	M717127/497483883486558400823 : 5ECB78CF48450C__ PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-12-16	ATH	C-PRP	M717127/497483883486558400823 : 646FAC090F9AD56A PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-10-13	Oliver Kruse	C-PRP	M717127/497483883486558400823 : 646FAC090F9AD56A PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-09-27	Oliver Kruse	C-PRP	M717127/497483883486558400823 : 646FAC090F9AD56A PRP: Unverified (Reliable) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-06-23	Scott Kurowski	F-ECM	Factor: 497483883486558400823