Q: What are the prime factors of the number 140,741,632?

 A: 2, 137443

Why are those the prime factors of the number 140,741,632?

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 140,741,632

140,741,632
Factor Arrows
270,370,816
Factor Arrows
235,185,408
Factor Arrows
217,592,704
Factor Arrows
28,796,352
Factor Arrows
24,398,176
Factor Arrows
22,199,088
Factor Arrows
21,099,544
Factor Arrows
2549,772
Factor Arrows
2274,886
Factor Arrows
2137,443

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, 137443

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 137,443 = 140,741,632

This can also be written as 210 x 137,4431 = 140,741,632

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


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