6 540 277 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
865994454256543	15	49.6	old
328212308500208399	18	58.2	2015-08-17 11:22:25

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-12-26	Chun sung soo	F105C26D608A0169	2	2058195	5	3
Verified	2018-11-12	Oliver Kruse	F105C26D608A0169	2	3442756	5	3
Verified	2018-11-22	Martin Russell	F105C26D608A0169	2	5565675	5	3

History

Date	User	Type	Result
2025-01-16	Stef42	NF-PM1	B1=2202000, B2=5491639230
2023-12-02	Stef42	NF-PM1	B1=94000, B2=124105800
2018-11-22	Martin Russell	C-PRP	M6540277/865994454256543/328212308500208399 : F105C26D608A0169 PRP: Verified PRP without proof (not generated)
2018-11-12	Oliver Kruse	C-PRP	M6540277/865994454256543/328212308500208399 : F105C26D608A0169 PRP: Verified PRP without proof (not generated)
2017-12-26	Chun sung soo	C-PRP	M6540277/865994454256543/328212308500208399 : F105C26D608A0169 PRP: Verified PRP without proof (not generated)
2015-08-17	TJAOI	F	Factor: 328212308500208399 / TF: 58-59