What is the prime factorization of the number 312

312 = 2 * 2 * 2 * 3 * 13 = 2³ * 3 * 13

divide 312 by 2 until complete then 3 then 13 to obtain prime factors

312 : 2 = 156

156 : 2 = 78

78 : 2 = 39 (2 does not divide into 39, move to next prime 3)

39 : 3 = 13

13 : 13 = 1 (on reaching 1, completed)