What is the prime factor of 28?

The prime factorization of 28 is 2 x 2 x 7. This means that 2 and 7 are its prime factors.

Prime factors are the prime numbers that divide a given number exactly without leaving a remainder. In the case of 28, it can be divided by 2 and 7 because there are no other prime numbers that can divide 28 without leaving a remainder. Multiplying the prime factors together gives the original number, in this case 2 x 2 x 7 = 28.