A prime number is a number with only 2 factors, 1 and itself, ex: (1,2,3,5,7,11,13, …)
Prime factors and prime factorization
The prime factor of any number is a prime factor found among its factors, ex: the prime factor of 36 is as follows;
F (36) = (1,2,3,6,9,12,18,36) P (36) = (2,3)
Highest common factor (H.C.F) or greatest common divisor (G.C.D)
Ex: find the H.C.F of
a) (28, 64), b) (38, 64)
Solution:
a) b)
=2*2=4 =2
