2 105 251 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
4951015618247	13	42.2	old
9433044471223	13	43.1	2008-09-30 14:36:28
1163648610416783	16	50.0	2014-05-19 13:38:27
254226896058906058663	21	67.8	2023-04-25 08:54:30
3293419875276668347487	22	71.5	2021-10-20 11:31:28

ECM

Digits	B1	Curves
25	50000	120 / 280

Estimated T-Level: 22.1 ⓘ

TF below 2^69 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-07	Oliver Kruse	E213F3CC4C5D7B0F	1	0	1	3
Verified (Factored)	2017-10-17	Oliver Kruse	DB7FB4ABFD58EAEA	3	2048950	5	3
Verified (Factored)	2017-11-17	kkmrkkblmbrbk	DB7FB4ABFD58EAEA	3	975189	5	3
Verified (Factored)	2021-10-22	_p95holder_	DB7FB4ABFD58EAEA	4	1338202	5	3
Verified	2023-06-15	/r/counting	DB7FB4ABFD58EAEA	5	940600	5	3

History

Date	User	Type	Result
2023-06-15	curtisc	CERT	PRP Certification Proof certified good
2023-06-15	/r/counting	C-PRP	M2105251/4951015618247/9433044471223/1163648610416783/3293419875276668347487/254226896058906058663 : DB7FB4ABFD58EAEA PRP proof power = 7 PRP: Verified Proof certified good
2023-04-25	TJAOI	F	Factor: 254226896058906058663 / TF: 67-68
2021-10-22	_p95holder_	C-PRP	M2105251/4951015618247/9433044471223/1163648610416783/3293419875276668347487 : DB7FB4ABFD58EAEA PRP: Verified (Factored) PRP without proof (not generated)
2021-10-20	_p95holder_	F-ECM	Factor: 3293419875276668347487 / (ECM curve 6, B1=50000, B2=5000000)
2017-11-17	kkmrkkblmbrbk	C-PRP	M2105251/4951015618247/9433044471223/1163648610416783 : DB7FB4ABFD58EAEA PRP: Verified (Factored) PRP without proof (not generated)
2017-10-17	Oliver Kruse	C-PRP	M2105251/4951015618247/9433044471223/1163648610416783 : DB7FB4ABFD58EAEA PRP: Verified (Factored) PRP without proof (not generated)
2017-10-07	Oliver Kruse	C-PRP	M2105251/4951015618247/9433044471223/1163648610416783 : E213F3CC4C5D7B0F PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-05-19	TJAOI	F	Factor: 1163648610416783
2008-09-30	markr	F	Factor: 9433044471223