Q: What are the prime factors of the number 42,873,030?

 A: 2, 3, 5, 97, 1637

Why are those the prime factors of the number 42,873,030?

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 42,873,030

42,873,030
Factor Arrows
221,436,515
Factor Arrows
37,145,505
Factor Arrows
32,381,835
Factor Arrows
3793,945
Factor Arrows
5158,789
Factor Arrows
971,637

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, 97, 1637

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 5 x 97 x 1,637 = 42,873,030

This can also be written as 21 x 33 x 51 x 971 x 1,6371 = 42,873,030

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


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