Q: What are the prime factors of the number 153,442,304?

 A: 2, 74923

Why are those the prime factors of the number 153,442,304?

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 153,442,304

153,442,304
Factor Arrows
276,721,152
Factor Arrows
238,360,576
Factor Arrows
219,180,288
Factor Arrows
29,590,144
Factor Arrows
24,795,072
Factor Arrows
22,397,536
Factor Arrows
21,198,768
Factor Arrows
2599,384
Factor Arrows
2299,692
Factor Arrows
2149,846
Factor Arrows
274,923

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, 74923

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 74,923 = 153,442,304

This can also be written as 211 x 74,9231 = 153,442,304

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


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