215 (number)

Template:Short description Template:Refimprove Template:Infobox number 215 (two hundred [and] fifteen) is the natural number following 214 and preceding 216.

In mathematics

• 215 is a composite number and a semiprime ($=5\times 43$).
• $215=(3!{)}^3-1$.
• 215 is the second smallest integer (after 5) such that $n^2-17$ is twice a square: $215^2-17=2\times 152^2$.
• 215 is a vertically symmetric number on a calculator display (sequence A053701 in the OEIS).

In other fields

• 215 is often used as slang for marijuana, from California Proposition 215, legalizing it for medical use.Template:Fact