Q: What are the prime factors of the number 464,163,280?

 A: 2, 5, 7, 118409

Why are those the prime factors of the number 464,163,280?

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 464,163,280

464,163,280
Factor Arrows
2232,081,640
Factor Arrows
2116,040,820
Factor Arrows
258,020,410
Factor Arrows
229,010,205
Factor Arrows
55,802,041
Factor Arrows
7828,863
Factor Arrows
7118,409

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, 118409

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 118,409 = 464,163,280

This can also be written as 24 x 51 x 72 x 118,4091 = 464,163,280

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


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