Q: What are the prime factors of the number 211,004,420?

 A: 2, 5, 11, 661, 1451

Why are those the prime factors of the number 211,004,420?

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 211,004,420

211,004,420
Factor Arrows
2105,502,210
Factor Arrows
252,751,105
Factor Arrows
510,550,221
Factor Arrows
11959,111
Factor Arrows
6611,451

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, 11, 661, 1451

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 11 x 661 x 1,451 = 211,004,420

This can also be written as 22 x 51 x 111 x 6611 x 1,4511 = 211,004,420

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


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