472 393 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
613484774432155913783	21	69.1	2009-08-24 10:20:21

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	200 / 640

Estimated T-Level: 26.6 ⓘ

TF below 2^83 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	1E9	0
Verified (Factored)		Chris Haley	29D87D61C12FC1E9	0
Verified (Factored)		Klaus Kastens	29D87D61C12FC1E9	0
Verified (Factored)		Eivind Triel	29D87D61C12FC1E9	311943

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-26	Oliver Kruse	03E26EBE72B84308	1	0	1	3
Verified	2017-09-27	Oliver Kruse	03E26EBE72B84308	1	0	1	3
Verified	2017-11-07	kkmrkkblmbrbk	03E26EBE72B84308	1	88376	1	3
Unverified (Reliable)	2020-04-18	Oliver Kruse	54275AC2F2E62A__	1	50855	5	3

History

Date	User	Type	Result
2020-04-18	Oliver Kruse	C-PRP	M472393/613484774432155913783 : 54275AC2F2E62A__ PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-11-07	kkmrkkblmbrbk	C-PRP	M472393/613484774432155913783 : 03E26EBE72B84308 PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-09-27	Oliver Kruse	C-PRP	M472393/613484774432155913783 : 03E26EBE72B84308 PRP: Unverified (Reliable) PRP without proof (not generated)
2017-09-26	Oliver Kruse	C-PRP	M472393/613484774432155913783 : 03E26EBE72B84308 PRP: Unverified (Reliable) PRP without proof (not generated)
2009-08-24	JimBa	F-ECM	Factor: 613484774432155913783