286 397 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
1711334904435820639	19	60.6	2007-08-27 20:28:38

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	490 / 640

Estimated T-Level: 28.8 ⓘ

TF below 2^91 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-22	Oliver Kruse	F87A8B3B4B2F1993	1	0	1	3
Verified	2017-10-12	Oliver Kruse	F87A8B3B4B2F1993	1	145069	1	3
Verified	2017-11-06	kkmrkkblmbrbk	F87A8B3B4B2F1993	1	260248	1	3
Unverified (Reliable)	2020-04-17	Oliver Kruse	1330740BA9F6D9__	1	105920	5	3

History

Date	User	Type	Result
2023-02-16	USAFSS	NF-PM1	B1=4000000, B2=22109179950
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2020-04-17	Oliver Kruse	C-PRP	M286397/1711334904435820639 : 1330740BA9F6D9__ PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-11-06	kkmrkkblmbrbk	C-PRP	M286397/1711334904435820639 : F87A8B3B4B2F1993 PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-10-12	Oliver Kruse	C-PRP	M286397/1711334904435820639 : F87A8B3B4B2F1993 PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-09-22	Oliver Kruse	C-PRP	M286397/1711334904435820639 : F87A8B3B4B2F1993 PRP: Unverified (Reliable) PRP without proof (not generated)
2017-09-22	Oliver Kruse	C-PRP	M286397/1711334904435820639 : F87A8B3B4B2F1993 PRP without proof (not generated)
2007-08-27	Team_Bundu	F-ECM	Factor: 1711334904435820639