Apocalypse Number
A number having 666 Digits (where 666 is the Beast Number) is called an apocalypse number. TheFibonacci Number 
is an apocalypse number.
References
Pickover, C. A. Keys to Infinity. New York: Wiley, pp. 97-102, 1995.
- Measurable Space
- Measure
- Measure Algebra
- Measure Polytope
- Measure-Preserving Transformation
- Measure Space
- Measure Theory
- Mechanical Quadrature
- Mecon
- Medial Axis
- Medial Deltoidal Hexecontahedron
- Medial Disdyakis Triacontahedron
- Medial Hexagonal Hexecontahedron
- Medial Icosacronic Hexecontahedron
- Medial Inverted Pentagonal Hexecontahedron
- Medial Pentagonal Hexecontahedron
- Medial Rhombic Triacontahedron
- Medial Triambic Icosahedron
- Medial Triangle
- Medial Triangle Locus Theorem
- Median Point
- Median (Statistics)
- Mediant
- Median (Triangle)
- Mega