Prime Numbers
11+ Maths, topic 4.1.1
Prime Numbers
Prime numbers are numbers that can only be divided by themselves and the number 1.
The exception - number 1
- The only exception is the number 1, which is not a prime number.
Prime numbers between 1 and 5
- 2 can only be divided by 1 and 2.
- So 2 is a prime number.
- 3 can only be divided by 1 and 3.
- So 3 is a prime number.
- 4 can be divided by 1, 2 and 4.
- So 4 is NOT a prime number.
- 5 can only be divided by 1 and 5.
- So 5 is a prime number.
Test yourself on Prime Numbers
Are any even numbers prime numbers?
Which numbers are prime numbers?
Which numbers are prime numbers?