Properties of the Number 80999

Eighty Thousand Nine Hundred Ninety-Nine

Basics

Value: 80998 → 80999 → 81000

Parity: odd

Prime: No

Previous Prime: 80989

Next Prime: 81001

Digit Sum: 35

Digital Root: 8

Palindrome: No

Factorization: 107 × 757

Divisors: 1, 107, 757, 80999

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110001100111

Octal: 236147

Duodecimal: 3AA5B

Hexadecimal: 13c67

Square: 6560838001

Square Root: 284.6032325888095

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

For increasing z > 0, integers, y - x, where x³ + y³ = z³ + 1, with y > x > 1. A259753

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 43 ones. A31811

a(n) is least k such that A077614(k)=n or 0 if there is none. A77615

a(n) = 3·n³ - 1. A345701

Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 2X4 el 1,1 1,2 1,3 1,4 2,4 with any orientation. A146019

Centrality of A080997(n) = a(n)/(A080997(n))². A80999

Number of (n+1)X(5+1) 0..1 arrays with every 2X2 subblock having a single 1 or two 1s on the same edge or main diagonally. A251289