5 506 429 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 4 known prime factors. Cofactor is composite.

Trial Factored to 2⁷⁰

TF target 2⁶⁶

Factored

Factor	Digits	Bits	Date
3821461727	10	31.8	old
20748224473	11	34.3	2008-09-08 01:36:59
258879253007	12	37.9	2008-09-08 01:36:59
12954160556809	14	43.6	2008-09-30 21:44:48

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-12-04	kkmrkkblmbrbk	77162F9A59A5830A	4	4160271	5	3
Verified	PRP without proof (not generated)	2018-07-01	storm5510	77162F9A59A5830A	4	825667	5	3

History

Date	User	Type	Result
2025-06-01	Sid & Andy	NF-PM1	B1=4700000, B2=7611542400
2025-05-04	Sid & Andy	F	Factors: 3821461727,258879253007 / TF: 68-70
2023-05-11	This -Anonymous-	NF-PM1	B1=50000, B2=1000000
2018-07-01	storm5510	C-PRP	M5506429/3821461727/20748224473/258879253007/12954160556809 : 77162F9A59A5830A
2017-12-04	kkmrkkblmbrbk	C-PRP	M5506429/3821461727/20748224473/258879253007/12954160556809 : 77162F9A59A5830A
2008-09-30	markr	F	Factor: 12954160556809
2008-09-08	Will Edgington	F	Factor: 258879253007
2008-09-08	Will Edgington	F	Factor: 20748224473