Q: What are the prime factors of the number 155,808?

 A: 2, 3, 541

Why are those the prime factors of the number 155,808?

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 155,808

155,808
Factor Arrows
277,904
Factor Arrows
238,952
Factor Arrows
219,476
Factor Arrows
29,738
Factor Arrows
24,869
Factor Arrows
31,623
Factor Arrows
3541

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, 541

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 541 = 155,808

This can also be written as 25 x 32 x 5411 = 155,808

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


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