Q: What are the prime factors of the number 312,636,402?

 A: 2, 3, 13, 43, 10357

Why are those the prime factors of the number 312,636,402?

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 312,636,402

312,636,402
Factor Arrows
2156,318,201
Factor Arrows
352,106,067
Factor Arrows
317,368,689
Factor Arrows
35,789,563
Factor Arrows
13445,351
Factor Arrows
4310,357

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, 13, 43, 10357

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 13 x 43 x 10,357 = 312,636,402

This can also be written as 21 x 33 x 131 x 431 x 10,3571 = 312,636,402

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


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