Q: What are the prime factors of the number 307,624,878?

 A: 2, 3, 11, 19181

Why are those the prime factors of the number 307,624,878?

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 307,624,878

307,624,878
Factor Arrows
2153,812,439
Factor Arrows
351,270,813
Factor Arrows
317,090,271
Factor Arrows
35,696,757
Factor Arrows
31,898,919
Factor Arrows
3632,973
Factor Arrows
3210,991
Factor Arrows
1119,181

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, 19181

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 3 x 11 x 19,181 = 307,624,878

This can also be written as 21 x 36 x 111 x 19,1811 = 307,624,878

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


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