9 990 137 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
21958321127	11	34.4	old
103607548633029848831	21	66.5	2020-04-21 12:19:59
679269656259694621829041	24	79.2	2025-09-07 00:47:27

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2019-12-01	mnd9	085DAA598302F636	1	7980584	5	3
Verified (Factored)	2020-04-21	ATH	085DAA598302F636	2	3505567	5	3
Verified	2025-09-14	kutens	085DAA598302F636	3	2770918	5	3

P-1 factors

Date	Factor	B1	B2
2025-09-07	679269656259694621829041	5630518	10262173350

History

Date	User	Type	Result
2025-09-15	L Colebourn	CERT	PRP Certification Proof certified good
2025-09-14	kutens	C-PRP	M9990137/21958321127/103607548633029848831/679269656259694621829041 : 085DAA598302F636 PRP proof power = 8 PRP: Verified Proof certified good
2025-09-07	Elysia	F-PM1	Factor: 679269656259694621829041 / (P-1, B1=5630518, B2=10262173350)
2020-04-21	ATH	C-PRP	M9990137/21958321127/103607548633029848831 : 085DAA598302F636 PRP: Verified (Factored) PRP without proof (not generated)
2020-04-21	TJAOI	F	Factor: 103607548633029848831 / TF: 66-67
2019-12-01	mnd9	C-PRP	M9990137/21958321127 : 085DAA598302F636 PRP: Verified (Factored) PRP without proof (not generated)