The prime factors of 14 are two and seven. The prime factors of a number are all the factors of a number that are also prime numbers.
Prime numbers are defined as numbers that can only be evenly divided by one and themselves. The first few prime numbers are 2, 3, 5, 7 and 11. A factor refers to any number that can be evenly multiplied into a large number. Two is divisible to 14, seven is the prime factorization. Note that 14 has no other factors other than one and 14 itself, making two and seven its only factors, which are both prime as well.