Question

Which of the following numbers has the largest number of unique prime factors?: {135, 62, 96}

Answer 1

All of them have just two unique prime factors and none has the largest number of unique primes.

Explanation:

Unique prime factors of `135` are `3` and `5` as `135=3xx3xx3xx5`

Unique prime factors of `62` are `2` and `31` as `62=2xx31`

Unique prime factors of `96` are `2` and `3` as `96=2xx2xx2xx2xx2xx3`

Hence, all of them have just two unique prime factors and none has the largest number of unique primes.