Q: What are the prime factors of the number 312,984?

 A: 2, 3, 7, 23

Why are those the prime factors of the number 312,984?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 312,984

312,984
Factor Arrows
2156,492
Factor Arrows
278,246
Factor Arrows
239,123
Factor Arrows
313,041
Factor Arrows
34,347
Factor Arrows
31,449
Factor Arrows
3483
Factor Arrows
3161
Factor Arrows
723

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 7, 23

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 3 x 3 x 7 x 23 = 312,984

This can also be written as 23 x 35 x 71 x 231 = 312,984

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


More Examples

Here are some more numbers to try:

Try the factor calculator

Explore more about the number 312,984:


Ask a Question