218 (number)

218 (two hundred [and] eighteen) is the natural number following 217 and preceding 219.

In mathematics

• Mertens function (218) = 3, a record high.
• 218 is nontotient and also noncototient.
• 218 is the number of inequivalent ways to color the 12 edges of a cube using at most 2 colors, where two colorings are equivalent if they differ only by a rotation of the cube.
• There are 218 nondegenerate Boolean functions of 3 variables.
• The number of surface points on a 7³ cube.

See also

• The years 218 and 218 BC

References