Q: What are the prime factors of the number 312,221,445?

 A: 3, 5, 827, 25169

Why are those the prime factors of the number 312,221,445?

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 312,221,445

312,221,445
Factor Arrows
3104,073,815
Factor Arrows
520,814,763
Factor Arrows
82725,169

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:

3, 5, 827, 25169

We can check our work by multiplying all of the prime factors together: 3 x 5 x 827 x 25,169 = 312,221,445

This can also be written as 31 x 51 x 8271 x 25,1691 = 312,221,445

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


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