With 3 distinct prime factors 78 is a sphenic number.

The first and possibly the second when counting distinct prime factors:

If an odd perfect number is of the form 12k + 1, it has at least twelve distinct prime factors.

At present, we can see two distinct factors that need to be understood: The process/thinking behind the production of content; and the actual content itself.

Roughly speaking, this means that most numbers have about this number of distinct prime factors.

Thus, 60 has 4 prime factors, but only 3 distinct prime factors.

What the proper filing fee is for your application will be based specifically on three (3) distinct factors.

The track record of a fund newsletter is a function of two distinct factors.

Each distinct prime factor of a pronic number is present in only one of its factors.

If an odd perfect number is of the form 36k + 9, it has at least nine distinct prime factors.