Q: What are the prime factors of the number 1,336,140?

 A: 2, 3, 5, 13, 571

Why are those the prime factors of the number 1,336,140?

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 1,336,140

1,336,140
Factor Arrows
2668,070
Factor Arrows
2334,035
Factor Arrows
3111,345
Factor Arrows
337,115
Factor Arrows
57,423
Factor Arrows
13571

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, 571

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 571 = 1,336,140

This can also be written as 22 x 32 x 51 x 131 x 5711 = 1,336,140

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


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