Q: What are the prime factors of the number 310,812,600?

 A: 2, 3, 5, 7, 43, 1721

Why are those the prime factors of the number 310,812,600?

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 310,812,600

310,812,600
Factor Arrows
2155,406,300
Factor Arrows
277,703,150
Factor Arrows
238,851,575
Factor Arrows
312,950,525
Factor Arrows
52,590,105
Factor Arrows
5518,021
Factor Arrows
774,003
Factor Arrows
431,721

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, 7, 43, 1721

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 5 x 7 x 43 x 1,721 = 310,812,600

This can also be written as 23 x 31 x 52 x 71 x 431 x 1,7211 = 310,812,600

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


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