Find the equivalence partition for phone numbers having the following format: Area Code (XXXX) Prefix (XX) - Suffix (XXX) N.B.: Area code is optional Area code: 4 digits number not beginning with 25 or 52 Prefix: 2 digits number except prime numbers which are in the range from 3rd to 4th digits of your student ID Suffix: 3 digits number not beginning with 2 and except first three prime numbers which are in the range from 2nd to 4th digits of your student ID