Q: What are the prime factors of the number 15,342,000?

 A: 2, 3, 5, 2557

Why are those the prime factors of the number 15,342,000?

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 15,342,000

15,342,000
Factor Arrows
27,671,000
Factor Arrows
23,835,500
Factor Arrows
21,917,750
Factor Arrows
2958,875
Factor Arrows
3319,625
Factor Arrows
563,925
Factor Arrows
512,785
Factor Arrows
52,557

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, 2557

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 5 x 5 x 2,557 = 15,342,000

This can also be written as 24 x 31 x 53 x 2,5571 = 15,342,000

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


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