What two number when multiplied equals 639 (six hundred thirty nine)?
From the aboves multiple we can see that 639 is a multiple of 6 numbers.
The numbers are 1, 3, 9, 71, 213, 639
These numbers are called the factors of 639.
3 x 71= 639
A prime number is a number that is divisible only by 1 and itself (without a remainder).
639 is not a prime number because it is divisible by other number than 1 and itself.
Lets learn factorization of other numbers.