Q: What are the prime factors of the number 140,533,248?

 A: 2, 3, 91493

Why are those the prime factors of the number 140,533,248?

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 140,533,248

140,533,248
Factor Arrows
270,266,624
Factor Arrows
235,133,312
Factor Arrows
217,566,656
Factor Arrows
28,783,328
Factor Arrows
24,391,664
Factor Arrows
22,195,832
Factor Arrows
21,097,916
Factor Arrows
2548,958
Factor Arrows
2274,479
Factor Arrows
391,493

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, 91493

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 3 x 91,493 = 140,533,248

This can also be written as 29 x 31 x 91,4931 = 140,533,248

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


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