Properties of the Number 18111

Eighteen Thousand One Hundred Eleven

Basics

Value: 18110 → 18111 → 18112

Parity: odd

Prime: No

Previous Prime: 18097

Next Prime: 18119

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 6037

Divisors: 1, 3, 6037, 18111

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011010111111

Octal: 43277

Duodecimal: A593

Hexadecimal: 46bf

Square: 328008321

Square Root: 134.57711543943867

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Numbers n such that 243·2ⁿ-1 is prime. A50880

Numbers consisting of ones and eights. A213084

Numbers k such that k and k² use only the digits 0, 1, 2, 3 and 8. A136814

Expansion of 1/((1-2·x)*(1+3·x)*(1-4·x)). A249994

Near-repunit semiprimes. A105993

a(n) is the smallest composite number obtained by appending one or more 1's to n. A358154

Powers of fourth root of 23 rounded down. A18111

Numbers k such that R_k+2 + 7·10^k is prime, where R_k = 11...1 is the repunit (A002275) of length k. A256933