Q: What are the prime factors of the number 155,201,600?

 A: 2, 5, 97001

Why are those the prime factors of the number 155,201,600?

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 155,201,600

155,201,600
Factor Arrows
277,600,800
Factor Arrows
238,800,400
Factor Arrows
219,400,200
Factor Arrows
29,700,100
Factor Arrows
24,850,050
Factor Arrows
22,425,025
Factor Arrows
5485,005
Factor Arrows
597,001

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, 97001

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 5 x 5 x 97,001 = 155,201,600

This can also be written as 26 x 52 x 97,0011 = 155,201,600

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


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