Q: What are the prime factors of the number 4,636,840?

 A: 2, 5, 13, 37, 241

Why are those the prime factors of the number 4,636,840?

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 4,636,840

4,636,840
Factor Arrows
22,318,420
Factor Arrows
21,159,210
Factor Arrows
2579,605
Factor Arrows
5115,921
Factor Arrows
138,917
Factor Arrows
37241

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, 5, 13, 37, 241

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 13 x 37 x 241 = 4,636,840

This can also be written as 23 x 51 x 131 x 371 x 2411 = 4,636,840

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


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