Q: What are the prime factors of the number 3,420,726?

 A: 2, 3, 31, 53, 347

Why are those the prime factors of the number 3,420,726?

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 3,420,726

3,420,726
Factor Arrows
21,710,363
Factor Arrows
3570,121
Factor Arrows
3118,391
Factor Arrows
53347

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, 3, 31, 53, 347

We can check our work by multiplying all of the prime factors together: 2 x 3 x 31 x 53 x 347 = 3,420,726

This can also be written as 21 x 31 x 311 x 531 x 3471 = 3,420,726

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


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