1 557 593 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
9345559	7	23.2	old
86267878852263067357841	23	76.2	2017-12-02 17:49:26

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)	2017-10-01	Oliver Kruse	880972B2D060FCFB	1	0	1	3
Verified (Factored)	2017-10-30	kkmrkkblmbrbk	880972B2D060FCFB	1	378005	1	3
Verified	2017-12-03	kkmrkkblmbrbk	70E59C0C81508A93	2	638860	5	3
Verified	2017-12-04	Oliver Kruse	70E59C0C81508A93	2	1427950	5	3

History

Date	User	Type	Result
2017-12-04	Oliver Kruse	C-PRP	M1557593/9345559/86267878852263067357841 : 70E59C0C81508A93 PRP: Verified PRP without proof (not generated)
2017-12-03	kkmrkkblmbrbk	C-PRP	M1557593/9345559/86267878852263067357841 : 70E59C0C81508A93 PRP: Verified PRP without proof (not generated)
2017-12-02	ATH	F-ECM	Factor: 86267878852263067357841 / (ECM curve 3, B1=50000, B2=5000000)
2017-10-30	kkmrkkblmbrbk	C-PRP	M1557593/9345559 : 880972B2D060FCFB PRP: Verified PRP without proof (not generated)
2017-10-01	Oliver Kruse	C-PRP	M1557593/9345559 : 880972B2D060FCFB PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12