4 292 383 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
855969616539319	15	49.6	old
2777808687620009	16	51.3	2014-06-24 13:19:49
63240755413292537569	20	65.8	2019-01-07 14:52:18

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	4A5267A326948F53	2	0	1	3
Verified (Factored)	2018-01-27	ATH	4A5267A326948F53	2	1865854	1	3
Verified	2019-01-07	ATH	A87338962C356385	3	1567462	5	3
Verified	2019-01-08	kkmrkkblmbrbk	A87338962C356385	3	3595756	5	3

History

Date	User	Type	Result
2023-03-31	USAFSS	NF-PM1	B1=224000, B2=111009150
2019-01-08	kkmrkkblmbrbk	C-PRP	M4292383/855969616539319/2777808687620009/63240755413292537569 : A87338962C356385 PRP: Verified PRP without proof (not generated)
2019-01-07	ATH	C-PRP	M4292383/855969616539319/2777808687620009/63240755413292537569 : A87338962C356385 PRP: Verified PRP without proof (not generated)
2019-01-07	Oliver Kruse	F-ECM	Factor: 63240755413292537569 / (ECM curve 3, B1=50000, B2=5000000)
2018-01-27	ATH	C-PRP	M4292383/855969616539319/2777808687620009 : 4A5267A326948F53 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4292383/2777808687620009/855969616539319 : 4A5267A326948F53 PRP: Verified PRP without proof (not generated)
2014-06-24	TJAOI	F	Factor: 2777808687620009