Q: What are the prime factors of the number 403,000,450?

 A: 2, 5, 19, 191, 2221

Why are those the prime factors of the number 403,000,450?

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 403,000,450

403,000,450
Factor Arrows
2201,500,225
Factor Arrows
540,300,045
Factor Arrows
58,060,009
Factor Arrows
19424,211
Factor Arrows
1912,221

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, 191, 2221

We can check our work by multiplying all of the prime factors together: 2 x 5 x 5 x 19 x 191 x 2,221 = 403,000,450

This can also be written as 21 x 52 x 191 x 1911 x 2,2211 = 403,000,450

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


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