Q: What are the prime factors of the number 42,460,544?

 A: 2, 7, 47389

Why are those the prime factors of the number 42,460,544?

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 42,460,544

42,460,544
Factor Arrows
221,230,272
Factor Arrows
210,615,136
Factor Arrows
25,307,568
Factor Arrows
22,653,784
Factor Arrows
21,326,892
Factor Arrows
2663,446
Factor Arrows
2331,723
Factor Arrows
747,389

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, 7, 47389

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 7 x 47,389 = 42,460,544

This can also be written as 27 x 71 x 47,3891 = 42,460,544

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


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