woody gooner
New member
- Joined
- Nov 2, 2009
- Messages
- 1
Im really puzzled as to how to work out the following 2 questions:
1. Find all the prime numbers p (if there are any) for which p^2 -1 is also prime
2. Find all prime numbers p such that p+2 and p+4 are also prime, giving reasons for your answer
Any help would be much appreciated, thanks
1. Find all the prime numbers p (if there are any) for which p^2 -1 is also prime
2. Find all prime numbers p such that p+2 and p+4 are also prime, giving reasons for your answer
Any help would be much appreciated, thanks