RIC-1069 Maths terms and tables

Factors
Any counting number that divides another without any remainder is a factor
of that number; e.g. 1, 2, 3, 5, 6, 10, 15 and 30 are factors of 30 because
1 x 30 = 30; 2 x 15 = 30; 3 x 10 = 30, and 5 x 6 = 30; i.e. they all divide 30 without
any remainder.
A prime number that divides a given counting number without any remainder
is called a prime factor. In the above example, 2, 3 and 5 are prime factors
of 30. [Note that 1 is not considered a prime number.]
Finding prime factors
1. Use a factor tree.
2. Divide by prime numbers and
continue as much as possible.
2 60
2 30
3 15
5
Thus 60 = 2 x 2 x 3 x 5, so the prime
factors of 60 are 2, 3, and 5
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