What two number when multiplied equals 16421 (sixteen thousand four hundred twenty one)?
From the aboves multiple we can see that 16421 is a multiple of 2 numbers.
The numbers are 1, 16421
These numbers are called the factors of 16421.
16421= 16421
A prime number is a number that is divisible only by 1 and itself (without a remainder).
16421 is a prime number because it has only two factors 1 and itself.
Lets learn factorization of other numbers.