Properties of the Number 80643

Eighty Thousand Six Hundred Forty-Three

Basics

Value: 80642 → 80643 → 80644

Parity: odd

Prime: No

Previous Prime: 80629

Next Prime: 80651

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 26881

Divisors: 1, 3, 26881, 80643

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10011101100000011

Octal: 235403

Duodecimal: 3A803

Hexadecimal: 13b03

Square: 6503293449

Square Root: 283.9771117537468

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

Numbers k such that (k+j) mod (2+j) = 1 for j from 0 to 8 and (k+9) mod 11 <> 1. A96026

Number of n X 3 0..1 arrays with every element equal to 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero. A297954

Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1100-0100-0111-0001 pattern in any orientation. A147199

a(0)=0; for n>0, a(n) = 4ⁿ - 2·3^n-1. A80643