1 864 553 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
2953451953	10	31.5	old
578041262849	12	39.1	2008-07-15 07:47:33
119013820349772043904647	24	76.7	2021-07-08 15:51:41

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 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	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-04	Oliver Kruse	E7B4FD115E5A99B4	2	0	1	3
Verified (Factored)	2017-11-07	kkmrkkblmbrbk	E7B4FD115E5A99B4	2	1087229	1	3
Verified	2021-07-09	Luigi Morelli	CBDA8953CE6DC63E	3	1821975	5	3

History

Date	User	Type	Result
2021-07-09	CaptainEntropy	CERT	PRP Certification Proof certified good
2021-07-09	Luigi Morelli	C-PRP	M1864553/2953451953/578041262849/119013820349772043904647 : CBDA8953CE6DC63E PRP proof power = 7 PRP: Verified Proof certified good
2021-07-08	_p95holder_	F-ECM	Factor: 119013820349772043904647 / (ECM curve 6, B1=50000, B2=5000000)
2017-11-07	kkmrkkblmbrbk	C-PRP	M1864553/2953451953/578041262849 : E7B4FD115E5A99B4 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1864553/2953451953/578041262849 : E7B4FD115E5A99B4 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-07-15	J Feitsma	F	Factor: 578041262849