Q: What are the prime factors of the number 416,421,170?

 A: 2, 5, 11, 331, 11437

Why are those the prime factors of the number 416,421,170?

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 416,421,170

416,421,170
Factor Arrows
2208,210,585
Factor Arrows
541,642,117
Factor Arrows
113,785,647
Factor Arrows
33111,437

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, 331, 11437

We can check our work by multiplying all of the prime factors together: 2 x 5 x 11 x 331 x 11,437 = 416,421,170

This can also be written as 21 x 51 x 111 x 3311 x 11,4371 = 416,421,170

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


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