Q: What are the prime factors of the number 77,760,276?

 A: 2, 3, 11, 31, 613

Why are those the prime factors of the number 77,760,276?

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 77,760,276

77,760,276
Factor Arrows
238,880,138
Factor Arrows
219,440,069
Factor Arrows
36,480,023
Factor Arrows
11589,093
Factor Arrows
3119,003
Factor Arrows
31613

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, 11, 31, 613

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 11 x 31 x 31 x 613 = 77,760,276

This can also be written as 22 x 31 x 111 x 312 x 6131 = 77,760,276

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


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