Q: What are the prime factors of the number 155,492,040?

 A: 2, 3, 5, 11, 117797

Why are those the prime factors of the number 155,492,040?

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 155,492,040

155,492,040
Factor Arrows
277,746,020
Factor Arrows
238,873,010
Factor Arrows
219,436,505
Factor Arrows
36,478,835
Factor Arrows
51,295,767
Factor Arrows
11117,797

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, 5, 11, 117797

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 11 x 117,797 = 155,492,040

This can also be written as 23 x 31 x 51 x 111 x 117,7971 = 155,492,040

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


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