A Wedge of Numbers

Hello!
Today, the word of the day is sphenic.
Maths Lesson

It is commonly used with 'number' to denote a number that is the product of three different prime numbers. However, the word by itself means wedge shaped. As a wedge has three corners, a sphenic number has three primes.
In a sentence:
The knife was sphenic.

That's it for now,
Jeffrey signing off...