Prime numbers are numbers that only have two factors, one and itself.
Examples of prime numbers are 2, 3, 5, 7, 11, 13, ….
Note: 1 is NOT a Prime number!!
Perfect squares and perfect cubes
For a perfect square’s prime factorisation, each factor is to the power of a multiple of 2.
For a perfect cube’s prime factorisation, each factor is to the power of a multiple of 3.
HCF & LCM
HCF, or Highest Common Factor, is the greatest common factor between two numbers.
LCM, or Lowest Common Multiple, is the smallest common multiple between two numbers.
Laws of Indices
Check out: Indices and Logarithm Laws