Q: What are the prime factors of the number 13,140,624?

 A: 2, 3, 7, 37, 151

Why are those the prime factors of the number 13,140,624?

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 13,140,624

13,140,624
Factor Arrows
26,570,312
Factor Arrows
23,285,156
Factor Arrows
21,642,578
Factor Arrows
2821,289
Factor Arrows
3273,763
Factor Arrows
739,109
Factor Arrows
75,587
Factor Arrows
37151

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, 7, 37, 151

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 7 x 7 x 37 x 151 = 13,140,624

This can also be written as 24 x 31 x 72 x 371 x 1511 = 13,140,624

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


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