Q: What are the prime factors of the number 401,404,250?

 A: 2, 5, 13, 113, 1093

Why are those the prime factors of the number 401,404,250?

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 401,404,250

401,404,250
Factor Arrows
2200,702,125
Factor Arrows
540,140,425
Factor Arrows
58,028,085
Factor Arrows
51,605,617
Factor Arrows
13123,509
Factor Arrows
1131,093

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, 113, 1093

We can check our work by multiplying all of the prime factors together: 2 x 5 x 5 x 5 x 13 x 113 x 1,093 = 401,404,250

This can also be written as 21 x 53 x 131 x 1131 x 1,0931 = 401,404,250

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


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