Q: What are the prime factors of the number 45,408,256?

 A: 2, 23, 241

Why are those the prime factors of the number 45,408,256?

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 45,408,256

45,408,256
Factor Arrows
222,704,128
Factor Arrows
211,352,064
Factor Arrows
25,676,032
Factor Arrows
22,838,016
Factor Arrows
21,419,008
Factor Arrows
2709,504
Factor Arrows
2354,752
Factor Arrows
2177,376
Factor Arrows
288,688
Factor Arrows
244,344
Factor Arrows
222,172
Factor Arrows
211,086
Factor Arrows
25,543
Factor Arrows
23241

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, 23, 241

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 2 x 2 x 2 x 2 x 23 x 241 = 45,408,256

This can also be written as 213 x 231 x 2411 = 45,408,256

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


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