Q: What are the prime factors of the number 3,749,120?

 A: 2, 5, 29, 101

Why are those the prime factors of the number 3,749,120?

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 3,749,120

3,749,120
Factor Arrows
21,874,560
Factor Arrows
2937,280
Factor Arrows
2468,640
Factor Arrows
2234,320
Factor Arrows
2117,160
Factor Arrows
258,580
Factor Arrows
229,290
Factor Arrows
214,645
Factor Arrows
52,929
Factor Arrows
29101

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, 29, 101

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 29 x 101 = 3,749,120

This can also be written as 28 x 51 x 291 x 1011 = 3,749,120

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


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