Q: What are the prime factors of the number 13,153,548?

 A: 2, 3, 19, 31, 1861

Why are those the prime factors of the number 13,153,548?

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 13,153,548

13,153,548
Factor Arrows
26,576,774
Factor Arrows
23,288,387
Factor Arrows
31,096,129
Factor Arrows
1957,691
Factor Arrows
311,861

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, 19, 31, 1861

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 19 x 31 x 1,861 = 13,153,548

This can also be written as 22 x 31 x 191 x 311 x 1,8611 = 13,153,548

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


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