Properties of the Number 81113

Eighty-One Thousand One Hundred Thirteen

Basics

Value: 81112 → 81113 → 81114

Parity: odd

Prime: No

Previous Prime: 81101

Next Prime: 81119

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 29 × 2797

Divisors: 1, 29, 2797, 81113

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110011011001

Octal: 236331

Duodecimal: 3AB35

Hexadecimal: 13cd9

Square: 6579318769

Square Root: 284.80344099044873

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

a(n) is the least semiprime > a(n-1) whose digits do not appear in a(n-1). A131220

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 0), (1, 0, -1), (1, 1, -1), (1, 1, 1)}. A149678

Number of paths of length n-1 a king can take from one side of an n X n chessboard to the opposite side. A81113

Indices of primes in sequence defined by A(0) = 83, A(n) = 10·A(n-1) - 17 for n > 0. A101058

Numbers n such that 8·10ⁿ + R_n + 2 is prime, where R_n = 11...1 is the repunit (A002275) of length n. A103071