Question: Prime Divisors

Comment on Prime Divisors

Hey Brent,

Why dont we consider 1 also to be one of the prime factors of 8500 along with 2,5 and 17.
gmat-admin's picture

1 isn't a prime number.

From the Official Guide: "A prime number is a positive integer that has exactly TWO different positive divisors, 1 and itself."

1 has only one positive divisor, so it is not prime.

My Bad. Thanks for reminding! :D

Would total number of prime factors be 6?
gmat-admin's picture

Good question.
Yes, without the word "DIFFERENT," there would be 6 primes in the factorization of 8500.

Cheers,
Brent

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