Properties of the Number 81799

Eighty-One Thousand Seven Hundred Ninety-Nine

Basics

Value: 81798 → 81799 → 81800

Parity: odd

Prime: Yes

Previous Prime: 81773

Next Prime: 81817

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 81799

Divisors: 1, 81799

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111110000111

Octal: 237607

Duodecimal: 3B407

Hexadecimal: 13f87

Square: 6691076401

Square Root: 286.00524470715567

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

a(0)=1, a(n) = prime(n³). A55875

Primes of the form k² + 3. A49423

a(n) = prime(1000·n). A31922

Denominator of best rational approximation x/y of log(k), y<=k, with k>1 given by A306975. The corresponding numerators are given in A306976. A306977

Duplicate of A049423. A121825

a(n) is the base-(-10) representation of a(n-1) read in base 10, starting from -1. A256639

Decimal expansion of the electric permittivity of vacuum in SI units as defined before 20 May 2019. A81799

a(n) = prime(1³) + prime(2³) + prime(3³) + ... + prime(n³). A109789