Q: What are the prime factors of the number 47,149,488?

 A: 2, 3, 19, 907

Why are those the prime factors of the number 47,149,488?

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 47,149,488

47,149,488
Factor Arrows
223,574,744
Factor Arrows
211,787,372
Factor Arrows
25,893,686
Factor Arrows
22,946,843
Factor Arrows
3982,281
Factor Arrows
3327,427
Factor Arrows
1917,233
Factor Arrows
19907

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, 19, 907

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 19 x 19 x 907 = 47,149,488

This can also be written as 24 x 32 x 192 x 9071 = 47,149,488

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


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