Q: What are the prime factors of the number 154,312,680?

 A: 2, 3, 5, 19, 53, 1277

Why are those the prime factors of the number 154,312,680?

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 154,312,680

154,312,680
Factor Arrows
277,156,340
Factor Arrows
238,578,170
Factor Arrows
219,289,085
Factor Arrows
36,429,695
Factor Arrows
51,285,939
Factor Arrows
1967,681
Factor Arrows
531,277

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, 19, 53, 1277

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 19 x 53 x 1,277 = 154,312,680

This can also be written as 23 x 31 x 51 x 191 x 531 x 1,2771 = 154,312,680

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


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