What two number when multiplied equals 81 (eighty one)?
From the aboves multiple we can see that 81 is a multiple of 5 numbers.
The numbers are 1, 3, 9, 27, 81
These numbers are called the factors of 81.
3= 81
A prime number is a number that is divisible only by 1 and itself (without a remainder).
81 is not a prime number because it is divisible by other number than 1 and itself.
Lets learn factorization of other numbers.