Properties of the Number -1161

One Hundred Sixty-One

Basics

Value: -1162 → -1161 → -1160

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 43

Divisors: 1, 3, 9, 27, 43, 129, 387, 1161

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10010001001

Octal: -2211

Duodecimal: -809

Hexadecimal: -489

Square: 1347921

Square Root: 34.07345007480164

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

Values of n such that L(11) and N(11) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A227449

∏_k>=1 (1 + x^k)^a(k) = 1 + 2x. A38067

Expansion of ∏_k>=0 (1-x^3·k+1)^3·k+1. A285050

a(n+4) = a(n+1) - a(n), a(0) = 1, a(1) = -4, a(2) = 0, a(3) = 1. A110064

Second bisection of the inverse binomial transform of the rational sequence with e.g.f. (x/2)*(exp(-x)+1)/(exp(x)-1). A228767

G.f. A(x) satisfies A(x²)³/A(x⁴)³ = 1 + (A(x)/A(x⁴) - 1)². A376229

Expansion of (1-5x²-7x³-2x⁴+x⁶)/((1-x)(1-x³)²). A141365

Expansion of 1/(∑_k>=0 x^k³)³. A363777

Sum of the first n primes. A7504

Number of degree-n irreducible polynomials over GF(2); number of n-bead necklaces with beads of 2 colors when turning over is not allowed and with primitive period n; number of binary Lyndon words of length n. A1037