Q: What are the prime factors of the number 158,807,776?

 A: 2, 19, 149, 1753

Why are those the prime factors of the number 158,807,776?

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 158,807,776

158,807,776
Factor Arrows
279,403,888
Factor Arrows
239,701,944
Factor Arrows
219,850,972
Factor Arrows
29,925,486
Factor Arrows
24,962,743
Factor Arrows
19261,197
Factor Arrows
1491,753

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, 19, 149, 1753

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 19 x 149 x 1,753 = 158,807,776

This can also be written as 25 x 191 x 1491 x 1,7531 = 158,807,776

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


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