Q: What are the prime factors of the number 4,354,740?

 A: 2, 3, 5, 13, 1861

Why are those the prime factors of the number 4,354,740?

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 4,354,740

4,354,740
Factor Arrows
22,177,370
Factor Arrows
21,088,685
Factor Arrows
3362,895
Factor Arrows
3120,965
Factor Arrows
524,193
Factor Arrows
131,861

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, 5, 13, 1861

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 13 x 1,861 = 4,354,740

This can also be written as 22 x 32 x 51 x 131 x 1,8611 = 4,354,740

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


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