Q: What are the prime factors of the number 361,130,720?

 A: 2, 5, 19, 211, 563

Why are those the prime factors of the number 361,130,720?

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 361,130,720

361,130,720
Factor Arrows
2180,565,360
Factor Arrows
290,282,680
Factor Arrows
245,141,340
Factor Arrows
222,570,670
Factor Arrows
211,285,335
Factor Arrows
52,257,067
Factor Arrows
19118,793
Factor Arrows
211563

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, 19, 211, 563

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 19 x 211 x 563 = 361,130,720

This can also be written as 25 x 51 x 191 x 2111 x 5631 = 361,130,720

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


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