Q: What are the prime factors of the number 605,423,360?

 A: 2, 5, 601, 787

Why are those the prime factors of the number 605,423,360?

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 605,423,360

605,423,360
Factor Arrows
2302,711,680
Factor Arrows
2151,355,840
Factor Arrows
275,677,920
Factor Arrows
237,838,960
Factor Arrows
218,919,480
Factor Arrows
29,459,740
Factor Arrows
24,729,870
Factor Arrows
22,364,935
Factor Arrows
5472,987
Factor Arrows
601787

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, 601, 787

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 2 x 2 x 5 x 601 x 787 = 605,423,360

This can also be written as 28 x 51 x 6011 x 7871 = 605,423,360

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


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