 Prime triplet

In mathematics, a prime triplet is a set of three prime numbers in which the smallest and largest of the three differ by 6.In particular, the sets must have the form ("p", "p" + 2, "p" + 6) or ("p", "p" + 4, "p" + 6).With the exceptions of (2, 3, 5) and (3, 5, 7), this is the closest possible grouping of three prime numbers, since one of every three sequential odd numbers is a multiple of three, and hence not prime (except for 3 itself).