EMIRP

Emirp Number – Explanation What is an Emirp Number? An Emirp number is a special type of prime number. Conditions: The number itself must be prime Its reverse must also be prime The reversed number should be different from the original Example: 17 → Prime Reverse (71) → Prime 17 ≠ 71 → Valid Emirp So, 17 is an Emirp number PYTHON : def prime(no): div=2 while div < no/2: if no % div == 0: return False div += 1 return True def reverse(no): rev = 0 while no > 0: rev = rev * 10 + no % 10 no = no //