Q: What are the prime factors of the number 51,490,400?

 A: 2, 5, 13, 4951

Why are those the prime factors of the number 51,490,400?

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 51,490,400

51,490,400
Factor Arrows
225,745,200
Factor Arrows
212,872,600
Factor Arrows
26,436,300
Factor Arrows
23,218,150
Factor Arrows
21,609,075
Factor Arrows
5321,815
Factor Arrows
564,363
Factor Arrows
134,951

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, 13, 4951

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 5 x 13 x 4,951 = 51,490,400

This can also be written as 25 x 52 x 131 x 4,9511 = 51,490,400

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


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