7 857 781 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
66571120633	11	36.0	old
200970606857	12	37.5	2008-09-08 03:40:50
33871059293873	14	44.9	2008-09-30 23:49:21

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-05-25	_p95holder_	001374AAB03633D0	3	2644752	5	3
Verified	2019-11-06	Nesowa	001374AAB03633D0	3	3618972	5	3

History

Date	User	Type	Result
2024-02-21	Stef42	NF-PM1	B1=2500000, B2=5184906090
2019-11-06	Nesowa	C-PRP	M7857781/66571120633/200970606857/33871059293873 : 001374AAB03633D0 PRP: Verified PRP without proof (not generated)
2018-05-25	_p95holder_	C-PRP	M7857781/66571120633/200970606857/33871059293873 : 001374AAB03633D0 PRP: Verified PRP without proof (not generated)
2008-09-30	markr	F	Factor: 33871059293873
2008-09-08	Will Edgington	F	Factor: 200970606857