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(just those submitted by Das)
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+ 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 pth 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]

+ 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]

(There are 13 curios for this number that have not yet been approved by an editor.)




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