5 241 889 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
53548655171823817	17	55.6	old
409706481545728532960263153	27	88.4	2025-04-27 16:25:51

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-11-25	Oliver Kruse	F7ABEEDCED62BCDF	1	3874271	5	3
Verified (Factored)	2018-01-28	kkmrkkblmbrbk	F7ABEEDCED62BCDF	1	3656569	5	3
Verified	2025-05-03	atk80230	F7ABEEDCED62BCDF	2	2116611	5	3

P-1 factors

Date	Factor	B1	B2
2025-04-27	409706481545728532960263153	3500000	9869749890

History

Date	User	Type	Result
2025-05-03	KongoCache	CERT	PRP Certification Proof certified good
2025-05-03	atk80230	C-PRP	M5241889/53548655171823817/409706481545728532960263153 : F7ABEEDCED62BCDF PRP proof power = 7 PRP: Verified Proof certified good
2025-04-27	Sid & Andy	F-PM1	Factor: 409706481545728532960263153 / (P-1, B1=3500000, B2=9869749890)
2025-03-17	Sid & Andy	NF	no factor from 2^68 to 2^70
2023-05-11	This -Anonymous-	NF-PM1	B1=50000, B2=1000000
2018-01-28	kkmrkkblmbrbk	C-PRP	M5241889/53548655171823817 : F7ABEEDCED62BCDF PRP: Verified (Factored) PRP without proof (not generated)
2017-11-25	Oliver Kruse	C-PRP	M5241889/53548655171823817 : F7ABEEDCED62BCDF PRP: Verified (Factored) PRP without proof (not generated)