Q: What are the prime factors of the number 154,556,480?

 A: 2, 5, 13, 53, 701

Why are those the prime factors of the number 154,556,480?

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 154,556,480

154,556,480
Factor Arrows
277,278,240
Factor Arrows
238,639,120
Factor Arrows
219,319,560
Factor Arrows
29,659,780
Factor Arrows
24,829,890
Factor Arrows
22,414,945
Factor Arrows
5482,989
Factor Arrows
1337,153
Factor Arrows
53701

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, 13, 53, 701

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 5 x 13 x 53 x 701 = 154,556,480

This can also be written as 26 x 51 x 131 x 531 x 7011 = 154,556,480

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


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