Zsigmondy Theorem
If 
and 
(i.e., 
and 
are Relatively Prime), then 
has a Primitive PrimeFactor with the following two possible exceptions:
- 1.
. - 2.
and 
is a Power of 2.
, then 
has a Primitive Prime Factor with the exception 
.
References
Ribenboim, P. The Little Book of Big Primes. New York: Springer-Verlag, p. 27, 1991.
- Legendre Quadrature
- Legendre Relation
- Legendre's Chi-Function
- Legendre's Constant
- Legendre Series
- Legendre's Factorization Method
- Legendre's Formula
- Legendre's Quadratic Reciprocity Law
- Legendre Sum
- Legendre Symbol
- Legendre Transformation
- Lehmer Method
- Lehmer Number
- Lehmer-Schur Method
- Lehmer's Constant
- Lehmer's Formula
- Lehmer's Phenomenon
- Lehmer's Problem
- Lehmer's Theorem
- Lehmus' Theorem
- Leibniz Criterion
- Leibniz Harmonic Triangle
- Leibniz Identity
- Leibniz Integral Rule
- Leibniz Series