Properties of the Number -13081

Thirteen Thousand Eighty-One

Basics

Value: -13082 → -13081 → -13080

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 103 × 127

Divisors: 1, 103, 127, 13081

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11001100011001

Octal: -31431

Duodecimal: -76A1

Hexadecimal: -3319

Square: 171112561

Square Root: 114.37219941926448

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 1⁵ + 2⁵ + ... + k⁵ is a square. A31138

a(n) = sum of absolute-valued coefficients of (1+2·x-2·x²)ⁿ. A84777

Sequence of pairwise relatively prime numbers of class P₇ (see comment in A275246). A275252

a(n) = 8·n² + 7·n + 1. A194268

Semiprimes whose prime factors are of equal binary length and which differ from each other in exactly two bit positions. A261074

a(n) = ∑_d∣n d² * (d+1)/2. A278403

a(n) = (1/2)*A293077(n). A293078

a(n) = (n-1)! * ∑_k=1..n k^k/k!. A54201

a(n) = 1 + n + ((n-1)*n²)/2. A218152

Irregular triangle T(n,c) read by rows: the number of clusters of n spheres centered on f.c.c. lattice sites with c contacts. A300812