4 907 897 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
339777115390519	15	48.3	old
816392678606852965759	21	69.5	2019-08-05 06:38:43

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	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-20	kkmrkkblmbrbk	A31FA23DEBB99131	1	0	1	3
Verified (Factored)	2018-04-09	Oliver Kruse	A31FA23DEBB99131	1	820642	1	3
Verified	2019-08-05	ATH	5329F035A7D8E86E	2	4542022	5	3
Verified	2019-08-06	marssystems	5329F035A7D8E86E	2	3425147	5	3

History

Date	User	Type	Result
2022-10-04	USAFSS	NF-PM1	B1=260000, B2=167750730
2019-08-06	marssystems	C-PRP	M4907897/339777115390519/816392678606852965759 : 5329F035A7D8E86E PRP: Verified PRP without proof (not generated)
2019-08-05	ATH	C-PRP	M4907897/339777115390519/816392678606852965759 : 5329F035A7D8E86E PRP: Verified PRP without proof (not generated)
2019-08-05	_p95holder_	F-ECM	Factor: 816392678606852965759 / (ECM curve 1, B1=50000, B2=5000000)
2018-04-09	Oliver Kruse	C-PRP	M4907897/339777115390519 : A31FA23DEBB99131 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4907897/339777115390519 : A31FA23DEBB99131 PRP: Verified PRP without proof (not generated)