Q: What are the prime factors of the number 46,145,400?

 A: 2, 3, 5, 7, 10987

Why are those the prime factors of the number 46,145,400?

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 46,145,400

46,145,400
Factor Arrows
223,072,700
Factor Arrows
211,536,350
Factor Arrows
25,768,175
Factor Arrows
31,922,725
Factor Arrows
5384,545
Factor Arrows
576,909
Factor Arrows
710,987

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, 10987

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 5 x 7 x 10,987 = 46,145,400

This can also be written as 23 x 31 x 52 x 71 x 10,9871 = 46,145,400

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


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