For any prime . Prove that

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- March 20th 2013, 06:49 PMKanwar245Prime number
For any prime . Prove that

- March 20th 2013, 07:24 PMrgrotheeRe: Prime number
0

- March 21st 2013, 05:11 AMHallsofIvyRe: Prime number
- March 21st 2013, 02:57 PMKanwar245Re: Prime number
- March 21st 2013, 03:59 PMHallsofIvyRe: Prime number
! Oh, Dear. Well,

Obviously, if p is prime, larger than or equal to 29, then both p+1, and p- 1 are even so it remains to show that one of the factors is divisible 7 and one by 13. - March 21st 2013, 08:27 PMNehushtanRe: Prime number