Q: What are the prime factors of the number 3,460,240?

 A: 2, 5, 7, 37, 167

Why are those the prime factors of the number 3,460,240?

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 3,460,240

3,460,240
Factor Arrows
21,730,120
Factor Arrows
2865,060
Factor Arrows
2432,530
Factor Arrows
2216,265
Factor Arrows
543,253
Factor Arrows
76,179
Factor Arrows
37167

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, 7, 37, 167

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 7 x 37 x 167 = 3,460,240

This can also be written as 24 x 51 x 71 x 371 x 1671 = 3,460,240

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


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