4 505 797 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
315405791	9	28.2	old
261363260783	12	37.9	2008-09-07 23:41:41
42334239540469941791	20	65.2	2018-07-24 11:16:17

ECM

Digits	B1	Curves
25	50000	3 / 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	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-20	kkmrkkblmbrbk	BC71BED792533B20	2	0	1	3
Verified (Factored)	2018-02-18	Oliver Kruse	BC71BED792533B20	2	579727	1	3
Verified	2018-07-27	_p95holder_	3CDD763064AC9A35	3	4052339	5	3
Verified	2018-07-28	Battlemaxx	3CDD763064AC9A35	3	4038716	5	3

History

Date	User	Type	Result
2022-09-16	USAFSS	NF-PM1	B1=400000, B2=220317240
2018-07-28	Battlemaxx	C-PRP	M4505797/315405791/261363260783/42334239540469941791 : 3CDD763064AC9A35 PRP: Verified PRP without proof (not generated)
2018-07-27	_p95holder_	C-PRP	M4505797/315405791/261363260783/42334239540469941791 : 3CDD763064AC9A35 PRP: Verified PRP without proof (not generated)
2018-07-24	TJAOI	F	Factor: 42334239540469941791 / TF: 65-66
2018-02-18	Oliver Kruse	C-PRP	M4505797/315405791/261363260783 : BC71BED792533B20 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4505797/261363260783/315405791 : BC71BED792533B20 PRP: Verified PRP without proof (not generated)
2008-09-07	Will Edgington	F	Factor: 261363260783