Properties of the Number -1105

One Hundred Five

Basics

Value: -1106 → -1105 → -1104

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 5 × 13 × 17

Divisors: 1, 5, 13, 17, 65, 85, 221, 1105

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10001010001

Octal: -2121

Duodecimal: -781

Hexadecimal: -451

Square: 1221025

Square Root: 33.24154027718932

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

Numerators in expansion of (1-x)^5/2. A161202

Square array A(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of e.g.f. exp(k*(1 - exp(x))). A292861

Triangle read by rows. T(n, k) = BellPolynomial(n, -k). A350263

Determinant of rank n matrix of 1..n² filled successively along antidiagonals. A69480

Expansion of 1/(1 + ∑_k>=1 k³ * x^k). A316088

Spontaneous magnetization coefficients for square lattice spin 2 Ising model. A10103

a(n) = a(n-1) - 2·a(n-2) - 3·a(n-3) - ... - (n-1)*a(1), with a(1) = a(2) = 1, a(3) = -1. A106540

Coefficients in the expansion of 1/([r] + [2r]x + [3r]x² + ...); [ ] = floor, r = 5/4. A279677

Real part of Gaussian amicable numbers in order of increasing magnitude. See A102925 for the imaginary part. A102924

Alternating sum of 9-gonal (or nonagonal) numbers. A266086