Q: What are the prime factors of the number 310,333,408?

 A: 2, 7, 11, 29, 43, 101

Why are those the prime factors of the number 310,333,408?

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 310,333,408

310,333,408
Factor Arrows
2155,166,704
Factor Arrows
277,583,352
Factor Arrows
238,791,676
Factor Arrows
219,395,838
Factor Arrows
29,697,919
Factor Arrows
71,385,417
Factor Arrows
11125,947
Factor Arrows
294,343
Factor Arrows
43101

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, 7, 11, 29, 43, 101

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 11 x 29 x 43 x 101 = 310,333,408

This can also be written as 25 x 71 x 111 x 291 x 431 x 1011 = 310,333,408

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


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