Q: What are the prime factors of the number 2,762,320?

 A: 2, 5, 11, 43, 73

Why are those the prime factors of the number 2,762,320?

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 2,762,320

2,762,320
Factor Arrows
21,381,160
Factor Arrows
2690,580
Factor Arrows
2345,290
Factor Arrows
2172,645
Factor Arrows
534,529
Factor Arrows
113,139
Factor Arrows
4373

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, 11, 43, 73

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 11 x 43 x 73 = 2,762,320

This can also be written as 24 x 51 x 111 x 431 x 731 = 2,762,320

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


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