Q: What are the prime factors of the number 771,326,244?

 A: 2, 3, 13, 17, 67, 1447

Why are those the prime factors of the number 771,326,244?

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 771,326,244

771,326,244
Factor Arrows
2385,663,122
Factor Arrows
2192,831,561
Factor Arrows
364,277,187
Factor Arrows
321,425,729
Factor Arrows
131,648,133
Factor Arrows
1796,949
Factor Arrows
671,447

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, 13, 17, 67, 1447

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 13 x 17 x 67 x 1,447 = 771,326,244

This can also be written as 22 x 32 x 131 x 171 x 671 x 1,4471 = 771,326,244

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


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