Q: What are the prime factors of the number 68,883,780?

 A: 2, 3, 5, 7, 401, 409

Why are those the prime factors of the number 68,883,780?

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 68,883,780

68,883,780
Factor Arrows
234,441,890
Factor Arrows
217,220,945
Factor Arrows
35,740,315
Factor Arrows
51,148,063
Factor Arrows
7164,009
Factor Arrows
401409

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, 401, 409

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 7 x 401 x 409 = 68,883,780

This can also be written as 22 x 31 x 51 x 71 x 4011 x 4091 = 68,883,780

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


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