Q: What are the prime factors of the number 78,880,240?

 A: 2, 5, 211, 4673

Why are those the prime factors of the number 78,880,240?

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 78,880,240

78,880,240
Factor Arrows
239,440,120
Factor Arrows
219,720,060
Factor Arrows
29,860,030
Factor Arrows
24,930,015
Factor Arrows
5986,003
Factor Arrows
2114,673

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, 5, 211, 4673

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 211 x 4,673 = 78,880,240

This can also be written as 24 x 51 x 2111 x 4,6731 = 78,880,240

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


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