5 052 997 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 3 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
121271929	9	26.9	old
8869177576258946399	19	62.9	2016-11-14 12:25:56
908897835414584735113	21	69.6	2019-10-14 11:54:48

ECM

Digits	B1	Curves
25	50000	2 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-20	kkmrkkblmbrbk	3D553CF2AFF65192	2	0	1	3
Verified (Factored)	2018-04-27	trebor	3D553CF2AFF65192	2	2273612	1	3
Verified	2019-10-15	mnd9	63C0901624025DBB	3	2799105	5	3
Verified	2019-10-15	Jaytholomew	63C0901624025DBB	3	2986066	5	3

History

Date	User	Type	Result
2025-04-18	Sid & Andy	F	Factor: 908897835414584735113 / TF: 68-70
2025-02-07	Sid & Andy	NF-PM1	B1=6000000, B2=6085661400
2023-05-11	This -Anonymous-	NF-PM1	B1=50000, B2=1000000
2019-10-15	Jaytholomew	C-PRP	M5052997/121271929/8869177576258946399/908897835414584735113 : 63C0901624025DBB PRP: Verified PRP without proof (not generated)
2019-10-15	mnd9	C-PRP	M5052997/121271929/8869177576258946399/908897835414584735113 : 63C0901624025DBB PRP: Verified PRP without proof (not generated)
2019-10-14	_p95holder_	F-ECM	Factor: 908897835414584735113 / (ECM curve 2, B1=50000, B2=5000000)
2018-04-27	trebor	C-PRP	M5052997/121271929/8869177576258946399 : 3D553CF2AFF65192 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M5052997/121271929/8869177576258946399 : 3D553CF2AFF65192 PRP: Verified PRP without proof (not generated)
2016-11-14	TJAOI	F	Factor: 8869177576258946399 / TF: 62-63