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Simply run through your vector P and pick every value with a distance of more than 4 from both its neighbours. ANd what will you do with that list now???
BTW, the second nextPrime() routine in my last sheet here http://communities.ptc.com/message/237185#237185 was erraneous, simply delete it.

PS. Any reason for excuding 2 and 3 from your list of primes?
Simply run through your vector P and pick every value with a distance of more than 4 from both its neighbours. ANd what will you do with that list now???
BTW, the second nextPrime() routine in my last sheet here http://communities.ptc.com/message/237185#237185 was erraneous, simply delete it.

PS. Any reason for excuding 2 and 3 from your list of primes?
