Q: What are the prime factors of the number 445,404,700?

 A: 2, 5, 13, 151, 2269

Why are those the prime factors of the number 445,404,700?

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 445,404,700

445,404,700
Factor Arrows
2222,702,350
Factor Arrows
2111,351,175
Factor Arrows
522,270,235
Factor Arrows
54,454,047
Factor Arrows
13342,619
Factor Arrows
1512,269

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, 13, 151, 2269

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 13 x 151 x 2,269 = 445,404,700

This can also be written as 22 x 52 x 131 x 1511 x 2,2691 = 445,404,700

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


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