Riesel
# Riesel

Riesel may refer to:

## People

* Hans Riesel (1929–2014), Swedish mathematician who discovered a Mersenne prime
* Victor Riesel (1913–1995), American labor union journalist

## In Mathematics

* Riesel number, an odd natural number k for which the integers of the form $k·2^n−1$ are all composite
* Riesel Sieve, a project to prove the smallest Riesel number

## Places

* Riesel, Texas
