Properties of the Number 1091

One Thousand Ninety-One

Basics

Value: 1090 → 1091 → 1092

Parity: odd

Prime: Yes

Previous Prime: 1087

Next Prime: 1093

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 1091

Divisors: 1, 1091

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001000011

Octal: 2103

Duodecimal: 76B

Hexadecimal: 443

Square: 1190281

Square Root: 33.03028912982749

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

Lesser of twin primes. A1359

Emirps (primes whose reversal is a different prime). A6567

Number of partitions of n into parts 5k+2 or 5k+3. A3106

Primes of the form 10·n+1. A30430

Primes whose binary representation is also the decimal representation of a prime. A65720

Initial members of prime triples (p, p+2, p+6). A22004

Numbers k such that (3^k - 1)/2 is prime. A28491

Number of n-bead necklaces with beads of 2 colors and primitive period n, when turning over is not allowed but the two colors can be interchanged. A48

a(n) = n² + 2. A59100

Larger member p+4 of cousin primes (p, p+4). A46132