Properties of the Number 80811

Eighty Thousand Eight Hundred Eleven

Basics

Value: 80810 → 80811 → 80812

Parity: odd

Prime: No

Previous Prime: 80809

Next Prime: 80819

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 41 × 73

Divisors: 1, 3, 9, 27, 41, 73, 123, 219, 369, 657

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10011101110101011

Octal: 235653

Duodecimal: 3A923

Hexadecimal: 13bab

Square: 6530417721

Square Root: 284.2727563450286

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 nXk 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 in row major order. A233073

a(n) = 121·n² - 38·n + 3. A157443

a(n) = 12·a(n-1) - 33·a(n-2) for n > 1; a(0) = 4, a(1) = 27. A164311

Number of n X 3 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 in row major order. A233068

Number of nX5 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 in row major order. A233070

a(1) = 8, a(n)= smallest n-th power obtained by inserting digits anywhere in a(n-1). A80811