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• ## RE: [PrimeNumbers] To slove a problem

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• ... Looks like homework! All numbers hav one of the three forms 3n, 3n+1 and 3n+2. First think why no factor of a number of the form 3n+2 has the form 3n.
Message 1 of 2 , Aug 9, 2005
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> [mailto:primenumbers@yahoogroups.com] On Behalf Of torgalsri
> 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 ).
>

Looks like homework! All numbers hav one of the three
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.

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