Q: What are the prime factors of the number 40,210,225?

 A: 5, 11, 73, 2003

Why are those the prime factors of the number 40,210,225?

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 40,210,225

40,210,225
Factor Arrows
58,042,045
Factor Arrows
51,608,409
Factor Arrows
11146,219
Factor Arrows
732,003

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:

5, 11, 73, 2003

We can check our work by multiplying all of the prime factors together: 5 x 5 x 11 x 73 x 2,003 = 40,210,225

This can also be written as 52 x 111 x 731 x 2,0031 = 40,210,225

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


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