Q: What are the prime factors of the number 154,641,200?

 A: 2, 5, 7, 55229

Why are those the prime factors of the number 154,641,200?

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 154,641,200

154,641,200
Factor Arrows
277,320,600
Factor Arrows
238,660,300
Factor Arrows
219,330,150
Factor Arrows
29,665,075
Factor Arrows
51,933,015
Factor Arrows
5386,603
Factor Arrows
755,229

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, 7, 55229

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 5 x 7 x 55,229 = 154,641,200

This can also be written as 24 x 52 x 71 x 55,2291 = 154,641,200

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


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