Q: What are the prime factors of the number 741,240?

 A: 2, 3, 5, 29, 71

Why are those the prime factors of the number 741,240?

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 741,240

741,240
Factor Arrows
2370,620
Factor Arrows
2185,310
Factor Arrows
292,655
Factor Arrows
330,885
Factor Arrows
310,295
Factor Arrows
52,059
Factor Arrows
2971

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, 5, 29, 71

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 29 x 71 = 741,240

This can also be written as 23 x 32 x 51 x 291 x 711 = 741,240

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


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