Q: What are the prime factors of the number 51,895,424?

 A: 2, 7, 17, 3407

Why are those the prime factors of the number 51,895,424?

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 51,895,424

51,895,424
Factor Arrows
225,947,712
Factor Arrows
212,973,856
Factor Arrows
26,486,928
Factor Arrows
23,243,464
Factor Arrows
21,621,732
Factor Arrows
2810,866
Factor Arrows
2405,433
Factor Arrows
757,919
Factor Arrows
173,407

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, 7, 17, 3407

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 7 x 17 x 3,407 = 51,895,424

This can also be written as 27 x 71 x 171 x 3,4071 = 51,895,424

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


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