2 338 883 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
557150053329193	15	49.0	old
41292704856911973359	20	65.2	2018-07-04 08:50:39

ECM

Digits	B1	Curves
25	50000	104 / 280

Estimated T-Level: 21.9 ⓘ

TF below 2^68 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-12	Oliver Kruse	DA9C980F3027D205	1	0	1	3
Verified (Factored)	2017-11-24	kkmrkkblmbrbk	DA9C980F3027D205	1	97777	1	3
Verified	2018-07-04	_p95holder_	EFDEE426355133B8	2	731915	5	3
Verified	2018-07-05	Battlemaxx	EFDEE426355133B8	2	374125	5	3

History

Date	User	Type	Result
2021-04-14	ViliamF	NF-PM1	B1=5000000, B2=305000000
2018-07-05	Battlemaxx	C-PRP	M2338883/557150053329193/41292704856911973359 : EFDEE426355133B8 PRP: Verified PRP without proof (not generated)
2018-07-04	_p95holder_	C-PRP	M2338883/557150053329193/41292704856911973359 : EFDEE426355133B8 PRP: Verified PRP without proof (not generated)
2018-07-04	TJAOI	F	Factor: 41292704856911973359 / TF: 65-66
2018-03-18	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2017-11-24	kkmrkkblmbrbk	C-PRP	M2338883/557150053329193 : DA9C980F3027D205 PRP: Verified PRP without proof (not generated)
2017-10-12	Oliver Kruse	C-PRP	M2338883/557150053329193 : DA9C980F3027D205 PRP: Verified PRP without proof (not generated)