What two number when multiplied equals 12391 (twelve thousand three hundred ninety one)?
From the aboves multiple we can see that 12391 is a multiple of 2 numbers.
The numbers are 1, 12391
These numbers are called the factors of 12391.
12391= 12391
A prime number is a number that is divisible only by 1 and itself (without a remainder).
12391 is a prime number because it has only two factors 1 and itself.
Lets learn factorization of other numbers.