What two number when multiplied equals 13991 (thirteen thousand nine hundred ninety one)?
From the aboves multiple we can see that 13991 is a multiple of 4 numbers.
The numbers are 1, 17, 823, 13991
These numbers are called the factors of 13991.
17 x 823= 13991
A prime number is a number that is divisible only by 1 and itself (without a remainder).
13991 is not a prime number because it is divisible by other number than 1 and itself.
Lets learn factorization of other numbers.