Theory on Number System

Multiplication is a short process of finding the sum of a given number. The number to be repeated is called multiplicand and the number which indicates how many times the multiplicand is to be repeated is called multiplier. The sum of the repetitions obtained is called the product.

To check whether number N is a prime, it involves following steps.

• 1 is neither prime number nor composite.
• The lowest prime number is 2.
• The lowest prime number is 2.

The numbers written by symbols 0,1,2,3,4,5,6,7,8 and 9 are known as digits.