Q: What are the prime factors of the number 4,765,905?

 A: 3, 5, 43, 821

Why are those the prime factors of the number 4,765,905?

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 4,765,905

4,765,905
Factor Arrows
31,588,635
Factor Arrows
3529,545
Factor Arrows
3176,515
Factor Arrows
535,303
Factor Arrows
43821

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:

3, 5, 43, 821

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 43 x 821 = 4,765,905

This can also be written as 33 x 51 x 431 x 8211 = 4,765,905

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


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