Q: What are the prime factors of the number 403,860?

 A: 2, 3, 5, 53, 127

Why are those the prime factors of the number 403,860?

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 403,860

403,860
Factor Arrows
2201,930
Factor Arrows
2100,965
Factor Arrows
333,655
Factor Arrows
56,731
Factor Arrows
53127

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, 53, 127

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 53 x 127 = 403,860

This can also be written as 22 x 31 x 51 x 531 x 1271 = 403,860

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


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