Introduction to prime number list

Introduction to prime number list:

List of prime numbers is a number only factors are itself 1.For example, 13 is a prime numbers, since it only factors are 1 and 13 this is the beginning list of the prime numbers as show below.

Prime number list

Here 2 is only the even prime number.The list of all the prime numbers goes on without stopping

Problem 1:

Identify each of the numbers below as either a prime numbers or a composite number. For other that are composite, give two divisor other than the number itself or 1

1. 43

2. 12

This will also help us on permutations and combinations

Solution:

a. Here 43 is a prime numbers because the only number that divide it without a remainder are 43 and 1.

b.12 is a composite number, because it can be written as 12 = 4*3 which means that 4 and 3 are divisor of 12