5, all other numbers ending in 5 are divisible by 5.
Chat with our AI personalities
Two and five!
2 and 5
2 and 5 are the only prime numbers that ends with 2 or 5.
All of the numbers that end in 5 are multiples of 5 which means that they have more than two factors.
because all other numbers that end with 5 are divided by 5, in which case they are not prime!