289 361 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
347560120045646839	18	58.3	old
69837621302628452064650633	26	85.9	2015-01-23 13:31:21

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	496 / 640

Estimated T-Level: 28.9 ⓘ

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	E9D04155482180B1	2	0	1	3
Verified	2017-10-12	Oliver Kruse	E9D04155482180B1	2	287195	1	3
Verified	2017-11-06	kkmrkkblmbrbk	E9D04155482180B1	2	168971	1	3
Unverified (Reliable)	2020-04-17	Oliver Kruse	AEBB64E0AFC249__	2	221238	5	3

History

Date	User	Type	Result
2023-03-19	Naegi Makoto	NF-PM1	B1=2000000, B2=69052933950
2022-02-06	Lisander Viaene	NF-PM1	B1=50000
2020-04-17	Oliver Kruse	C-PRP	M289361/347560120045646839/69837621302628452064650633 : AEBB64E0AFC249__ PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-11-06	kkmrkkblmbrbk	C-PRP	M289361/347560120045646839/69837621302628452064650633 : E9D04155482180B1 PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-10-12	Oliver Kruse	C-PRP	M289361/347560120045646839/69837621302628452064650633 : E9D04155482180B1 PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-09-22	Oliver Kruse	C-PRP	M289361/known_factors : E9D04155482180B1 PRP without proof (not generated)
2015-01-23	TJAOI	F-ECM	Factor: 69837621302628452064650633 / (ECM curve 10, B1=50000, B2=5000000)