Q: What are the prime factors of the number 173,808,880?

 A: 2, 5, 7, 101, 439

Why are those the prime factors of the number 173,808,880?

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 173,808,880

173,808,880
Factor Arrows
286,904,440
Factor Arrows
243,452,220
Factor Arrows
221,726,110
Factor Arrows
210,863,055
Factor Arrows
52,172,611
Factor Arrows
7310,373
Factor Arrows
744,339
Factor Arrows
101439

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, 7, 101, 439

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 7 x 7 x 101 x 439 = 173,808,880

This can also be written as 24 x 51 x 72 x 1011 x 4391 = 173,808,880

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


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