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• If your conjecture were true we wouldn t have any Mersenne primes. Bouk. ... __________________________________________________ Do You Yahoo!? Get personalized
Message 1 of 62 , May 30, 2001
If your conjecture were true we wouldn't have any
Mersenne primes.

Bouk.

>
> I have 'good reason to believe' that
> 2^n - 1 = n*p for some integer n, p a prime.
>
> n is odd, "I know that, I know that.."
>
> Can you prove me wrong, right!
>
> regards
> Paul Mills
> Keniworth,
> England.
>

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• ... No it doesn t, it fails for: # terms sum 21 715 22 793 24 965 27 1267 30 1595 etc.
Message 62 of 62 , Jun 22, 2004
At 06:21 PM 6/22/2004, edmorrey wrote:
>I have found that the sum of all the prime number to a number plus 2
>or 3 alternating gives a prime number
>
>for example:
>
>2 +3 = 5
>2+3 +2 = 7
>2+3+5 +3 = 13
>2+3+5+7 +2 = 19
>2+3+5+7+11 + 3 = 31
>2+3+5+7+11+13 +2 = 43
>ect.
>
>I will like to know if this is thruth in all the cases

No it doesn't, it fails for:

# terms sum
21 715
22 793
24 965
27 1267
30 1595
etc.
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