because all other numbers that end with 5 are divided by 5, in which case they are not prime!
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The only prime number that ends in 5 is 5.
The only prime number that ends in a 5 is 5 itself. All the other positive integers that end in 5 are divisible by 5 and therefore not prime.
Any number that ends with the digit 5 is divisible by 5.Any number that ends with the digit 5 is divisible by 5.Any number that ends with the digit 5 is divisible by 5.Any number that ends with the digit 5 is divisible by 5.
Since 5 is prime, only 5 and 1 are its factors. 5 is a prime number, all prime numbers are divisible by only itself and 1. 5 is a prime number, all prime numbers are divisible by only itself and 1.5 (1 is not prime)5 is a prime number. It has no other prime factors.
2 and 5 are the only prime numbers that ends with 2 or 5.