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#1
January 24th 07, 11:01 AM
posted to sci.astro.amateur
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1, 2, 3, 5, 7... PRIME Numbers
In article ,
"S y z y g y" wrote: All primes except 2 and 3 are of the form 6n +/- 1 (that is 6n plus or minus 1). Scarcely surprising, considering that numbers of the forms 6n and 6n +/- 2 are all even, and those of the form 6n +/- 3 are all divisible by 3. -- Odysseus 
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