1 389 961 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
4340132648297279	16	51.9	old
137300598231272570110697	24	76.9	2018-08-11 05:33:07

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	105 / 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)	2017-09-30	Oliver Kruse	923D4A8DEC682EA4	1	0	1	3
Verified (Factored)	2017-10-25	kkmrkkblmbrbk	923D4A8DEC682EA4	1	11026	1	3
Verified	2018-08-13	Oliver Kruse	407BBA3EAB2D5676	2	1000106	5	3
Verified	2018-08-14	GdS	407BBA3EAB2D5676	2	477761	5	3

History

Date	User	Type	Result
2018-08-14	GdS	C-PRP	M1389961/4340132648297279/137300598231272570110697 : 407BBA3EAB2D5676 PRP: Verified PRP without proof (not generated)
2018-08-13	Oliver Kruse	C-PRP	M1389961/4340132648297279/137300598231272570110697 : 407BBA3EAB2D5676 PRP: Verified PRP without proof (not generated)
2018-08-11	Chang Chia-Tche	F-ECM	Factor: 137300598231272570110697 / (ECM curve 2, B1=50000, B2=5000000)
2017-10-25	kkmrkkblmbrbk	C-PRP	M1389961/4340132648297279 : 923D4A8DEC682EA4 PRP: Verified PRP without proof (not generated)
2017-09-30	Oliver Kruse	C-PRP	M1389961/4340132648297279 : 923D4A8DEC682EA4 PRP: Verified PRP without proof (not generated)