Q: What are the prime factors of the number 42,517,629?

 A: 3, 7, 11, 17, 401

Why are those the prime factors of the number 42,517,629?

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 42,517,629

42,517,629
Factor Arrows
314,172,543
Factor Arrows
34,724,181
Factor Arrows
31,574,727
Factor Arrows
3524,909
Factor Arrows
774,987
Factor Arrows
116,817
Factor Arrows
17401

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:

3, 7, 11, 17, 401

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 7 x 11 x 17 x 401 = 42,517,629

This can also be written as 34 x 71 x 111 x 171 x 4011 = 42,517,629

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


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