Primorial

In mathematics, and more particularly in number theory, primorial is a function from natural numbers to natural numbers similar to the factorial function, but rather than successively multiplying positive integers, only prime numbers are multiplied. The name "primorial", coined by Harvey Dubner, draws an analogy to primes the same way the name "factorial" relates to factors.

Primorial

In mathematics, and more particularly in number theory, primorial is a function from natural numbers to natural numbers similar to the factorial function, but rather than successively multiplying positive integers, only prime numbers are multiplied. The name "primorial", coined by Harvey Dubner, draws an analogy to primes the same way the name "factorial" relates to factors.