What two number when multiplied equals 405 (four hundred five)?
From the aboves multiple we can see that 405 is a multiple of 10 numbers.
The numbers are 1, 3, 5, 9, 15, 27, 45, 81, 135, 405
These numbers are called the factors of 405.
3 x 5= 405
A prime number is a number that is divisible only by 1 and itself (without a remainder).
405 is not a prime number because it is divisible by other number than 1 and itself.
Lets learn factorization of other numbers.