Properties of the Number 10891

Ten Thousand Eight Hundred Ninety-One

Basics

Value: 10890 → 10891 → 10892

Parity: odd

Prime: Yes

Previous Prime: 10889

Next Prime: 10903

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 10891

Divisors: 1, 10891

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101010001011

Octal: 25213

Duodecimal: 6377

Hexadecimal: 2a8b

Square: 118613881

Square Root: 104.3599540053559

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

Primes which are the concatenation of two squares (in decimal notation). A167535

Records of first differences of A166944. A166945

a(n) = (11·n² - 11·n + 2)/2. A69125

Primes p whose period of reciprocal equals (p-1)/9. A56214

Primes that are the difference of two Fibonacci numbers; primes in A007298. A113188

Primes for which the weight as defined in A117078 is 23. A119504

The 240-degree spoke (or ray) of a hexagonal spiral of Ulam. A244805

Primes p such that A001177(p) = (p-1)/5. A308798

a(n) = 10·n² + 1. A158187

Numbers that can be written in exactly two different ways as s₁^x_1 + ... + s_t^x_t, with 1 < s₁ < ... < s_t and {s₁,..., s_t} = {x₁,..., x_t} for some t > 0. A386966