Q: What are the prime factors of the number 154,785,760?

 A: 2, 5, 29, 33359

Why are those the prime factors of the number 154,785,760?

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 154,785,760

154,785,760
Factor Arrows
277,392,880
Factor Arrows
238,696,440
Factor Arrows
219,348,220
Factor Arrows
29,674,110
Factor Arrows
24,837,055
Factor Arrows
5967,411
Factor Arrows
2933,359

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, 5, 29, 33359

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 29 x 33,359 = 154,785,760

This can also be written as 25 x 51 x 291 x 33,3591 = 154,785,760

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


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