Properties of the Number 91120

Ninety-One Thousand One Hundred Twenty

Basics

Value: 91119 → 91120 → 91121

Parity: even

Prime: No

Previous Prime: 91099

Next Prime: 91121

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ⁴ × 5 × 17 × 67

Divisors: 1, 2, 4, 5, 8, 10, 16, 17, 20, 34

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10110001111110000

Octal: 261760

Duodecimal: 44894

Hexadecimal: 163f0

Square: 8302854400

Square Root: 301.8608951156145

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

T(n,k) = Number of n-turn bishop's tours on a k X k board summed over all starting positions. A188777

Expansion of ∏_m>=1 (1 + m·q^m)^-4. A22696

a(n) = 2·a(n-1) + a(n-2) - 4·a(n-3) + 2·a(n-4) + a(n-5) -2·a(n-6) + a(n-7) for n >= 7, a(0) = 2, a(1) = 4, a(2) = 7, a(3) = 11, a(4) = 18, a(5) = 30, a(6) = 47. A289077

Number of 5-turn bishop's tours on an n X n board summed over all starting positions. A188780

Concatenation of odd n and even n-th nonprime. A155486

Number of primes of the form 7k+1 less than 10ⁿ. A91120

Number of (n+2)X5 0..2 arrays with no 3X3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..2 introduced in row major order. A204777