Q: What are the prime factors of the number 460,241,408?

 A: 2, 11, 17, 19, 23

Why are those the prime factors of the number 460,241,408?

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 460,241,408

460,241,408
Factor Arrows
2230,120,704
Factor Arrows
2115,060,352
Factor Arrows
257,530,176
Factor Arrows
228,765,088
Factor Arrows
214,382,544
Factor Arrows
27,191,272
Factor Arrows
23,595,636
Factor Arrows
21,797,818
Factor Arrows
2898,909
Factor Arrows
1181,719
Factor Arrows
117,429
Factor Arrows
17437
Factor Arrows
1923

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, 11, 17, 19, 23

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 2 x 2 x 11 x 11 x 17 x 19 x 23 = 460,241,408

This can also be written as 29 x 112 x 171 x 191 x 231 = 460,241,408

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


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