# 11

This number is a prime.

Just showing those entries submitted by 'Das': (Click here to show all)

At least one edge of the hypothetical perfect cuboid (or Euler integer brick) is divisible by 11. [Beedassy]

The only number in base ten that is not Nivenmorphic ; In other words, 11 never divides a number ending in 11 if its sum of digits is also equal to 11. [Boscaro and Beedassy]

The minimum prime p such that p ± 1 each has exactly 2 distinct prime factors. [Das]

The smallest prime *p* such that the sum of digits of
*p* divides the sum of digits of the *p*th prime. [Beedassy]

The smallest odd Ramanujan prime. [Beedassy]

The first number *n* that divides N-1, where N is the least common multiple of all numbers below *n*. [Beedassy]

It suffices to pick up any 11 numbers among the first hundred to ensure getting a pair close enough for their square roots to differ by less than unity. [Beedassy]

The smallest prime *p* whose next *p* primes
starting with *p* add up to a prime (emirp) ending in
*p*: 11 + 13 + ... + 43 + 47 = 311. [Beedassy]

The smallest prime whose digits are both nonprime and noncomposite. [Beedassy]

The smallest number of divisors which no number can have among the first thousand. [Beedassy]

The highest prime dividing the number of yards, feet, or inches (basic US length units) that make up a mile. [Beedassy]

*Ekadashi* (11 in Sanskrit) is the sacred eleventh day of each of the bright and dark halves of a lunar month. [Beedassy]

Viggo Brun showed in 1920 that there exists a number with
at most 11 prime factors between *n* and *n* +
sqrt(*n*) for sufficiently large *n*. [Beedassy]

With reference to the Ten Commandments of Christianity, "The Eleventh Commandment" is a term used to describe a rule or policy that is extremely important to the point of being sacred. [Beedassy]

The *YouTube* online unlimited video-sharing platform
uses a 11-character randomly generated code in base 64 to
identify each upload. [Beedassy]

There are eleven distinct nets on a plane that can be folded up to produce a cube. [Beedassy]

The maximum number of turns required to solve the Mini Cube (the 2×2×2 equivalent of a Rubik's Cube) is up to 11 half or quarter turns. [Beedassy]

11π is the area enclosed inside the Cardioid with polar equation r = 3 + 2cosθ, where 0 ⩽ θ ⩽ 2π. [Beedassy]