Q: What are the prime factors of the number 42,143,010?

 A: 2, 3, 5, 7, 13, 43, 359

Why are those the prime factors of the number 42,143,010?

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 42,143,010

42,143,010
Factor Arrows
221,071,505
Factor Arrows
37,023,835
Factor Arrows
51,404,767
Factor Arrows
7200,681
Factor Arrows
1315,437
Factor Arrows
43359

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, 7, 13, 43, 359

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 7 x 13 x 43 x 359 = 42,143,010

This can also be written as 21 x 31 x 51 x 71 x 131 x 431 x 3591 = 42,143,010

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


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