Properties of the Number 68081

Sixty-Eight Thousand Eighty-One

Basics

Value: 68080 → 68081 → 68082

Parity: odd

Prime: No

Previous Prime: 68071

Next Prime: 68087

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 13 × 5237

Divisors: 1, 13, 5237, 68081

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000100111110001

Octal: 204761

Duodecimal: 33495

Hexadecimal: 109f1

Square: 4635022561

Square Root: 260.9233603953467

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

Expansion of 1/(1 - x - x² + x⁴ - x⁶). A117791

Number of partitions p of n such that median(p) <= multiplicity(min(p)). A240213

Positive numbers y such that y² is of the form x²+(x+119)² with integer x. A156650

A triangular sequence of polynomial coefficients:p(x,n)=Sum[Eulerian[n + 1, k]*Product[x + i, {i, 0, n - k + 1}]*(-x)^k, {k, 0, n}]/x. A174833

The number of permutations of length n sortable by 2 prefix block transpositions. A228394

a(n) = n-th elementary symmetric function of {1, prime(1), prime(2), ..., prime(n)}. A24528

Numbers n such that n + φ(n) and n - φ(n) are prime. A68081