505 513 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
2552609370616951178191	22	71.1	2007-08-30 08:25:26
7189940958046643453984110946857	31	102.5	2020-08-07 11:03:51

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	218 / 640

Estimated T-Level: 26.7 ⓘ

TF below 2^84 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-27	Oliver Kruse	3D44DDAD770A560B	1	0	1	3
Verified (Factored)	2017-11-03	kkmrkkblmbrbk	3D44DDAD770A560B	1	176985	1	3
Verified (Factored)	2020-04-18	Oliver Kruse	85DFD06AC619A066	1	255604	5	3
Verified	2020-08-07	M Miller	85DFD06AC619A066	2	299119	5	3

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2021-05-17	gLauss	NF-PP1	Start=2/7, B1=5000000, B2=365000000
2021-05-17	gLauss	NF-PM1	B1=10000000, B2=820000000
2020-08-07	M Miller	C-PRP	M505513/2552609370616951178191/7189940958046643453984110946857 : 85DFD06AC619A066 PRP: Verified PRP without proof (small exponent)
2020-08-07	TJAOI	F-ECM	Factor: 7189940958046643453984110946857 / (ECM curve 39, B1=250000, B2=25000000)
2020-04-18	Oliver Kruse	C-PRP	M505513/2552609370616951178191 : 85DFD06AC619A066 PRP: Verified PRP without proof (small exponent)
2017-11-03	kkmrkkblmbrbk	C-PRP	M505513/2552609370616951178191 : 3D44DDAD770A560B PRP: Verified PRP without proof (small exponent)
2017-09-27	Oliver Kruse	C-PRP	M505513/2552609370616951178191 : 3D44DDAD770A560B PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=1500000, B2=50000000, E=12
2007-08-30	Team_Bundu	F-ECM	Factor: 2552609370616951178191