Prime and Composite
Prime number: An integer greater than 1 whose only positive divisors are itself and 1. 2=1×2 3=1×3 5=1×5 7=1×7 11=1×11 2, 3, 4, 5, 7, 11 … are all prime numbers.
Composite number: An integer greater than 1 that is not prime. 4=1×4=2×2, it is a composite number.
Learn to classify numbers as prime or composite by reading the explanation below.