1 774 637 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
213382352881	12	37.6	old
178141472014347679	18	57.3	2015-06-09 11:51:42
172317443439660017329	21	67.2	2020-05-13 07:35:01

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 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)	2017-10-03	Oliver Kruse	0D61033DAE84D8F3	2	0	1	3
Verified (Factored)	2017-11-04	kkmrkkblmbrbk	0D61033DAE84D8F3	2	787060	1	3
Verified	2020-05-14	mnd9	4977151263531611	3	1153461	5	3
Verified	2020-05-19	AbsolutXTR	4977151263531611	3	815956	5	3

History

Date	User	Type	Result
2020-05-19	AbsolutXTR	C-PRP	M1774637/213382352881/178141472014347679/172317443439660017329 : 4977151263531611 PRP: Verified PRP without proof (not generated)
2020-05-14	mnd9	C-PRP	M1774637/213382352881/178141472014347679/172317443439660017329 : 4977151263531611 PRP: Verified PRP without proof (not generated)
2020-05-13	Chang Chia-Tche	F-ECM	Factor: 172317443439660017329 / (ECM curve 2, B1=50000, B2=5000000)
2017-11-04	kkmrkkblmbrbk	C-PRP	M1774637/213382352881/178141472014347679 : 0D61033DAE84D8F3 PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1774637/213382352881/178141472014347679 : 0D61033DAE84D8F3 PRP: Verified PRP without proof (not generated)
2015-06-09	TJAOI	F	Factor: 178141472014347679 / TF: 57-58