Q: What are the prime factors of the number 300,420,315?

 A: 3, 5, 13, 39503

Why are those the prime factors of the number 300,420,315?

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 300,420,315

300,420,315
Factor Arrows
3100,140,105
Factor Arrows
333,380,035
Factor Arrows
56,676,007
Factor Arrows
13513,539
Factor Arrows
1339,503

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, 13, 39503

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 13 x 13 x 39,503 = 300,420,315

This can also be written as 32 x 51 x 132 x 39,5031 = 300,420,315

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


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