Q: What are the prime factors of the number 146,732,288?

 A: 2, 19, 97, 311

Why are those the prime factors of the number 146,732,288?

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 146,732,288

146,732,288
Factor Arrows
273,366,144
Factor Arrows
236,683,072
Factor Arrows
218,341,536
Factor Arrows
29,170,768
Factor Arrows
24,585,384
Factor Arrows
22,292,692
Factor Arrows
21,146,346
Factor Arrows
2573,173
Factor Arrows
1930,167
Factor Arrows
97311

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, 19, 97, 311

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 19 x 97 x 311 = 146,732,288

This can also be written as 28 x 191 x 971 x 3111 = 146,732,288

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


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