> [mailto:primenumbers@yahoogroups.com] On Behalf Of torgalsri

Looks like homework! All numbers hav one of the three

> i have one problem reguarding to this

> prime numbers.

>

> question : prove : every integer of the form 3n+2 has a

> prime factor of the

> same form( ie., 3n+2 ).

>

forms 3n, 3n+1 and 3n+2. First think why no factor of

a number of the form 3n+2 has the form 3n. Next think

what you would get if every factor was 3n+1.

CC