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Properties of the Number -123111

One Hundred Twenty-Three Thousand One Hundred Eleven

Basics

Value: -123112 → -123111 → -123110

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 2 × 13679

Divisors: 1, 3, 9, 13679, 41037, 123111

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -11110000011100111

Octal: -360347

Duodecimal: -5B2B3

Hexadecimal: -1e0e7

Square: 15156318321

Square Root: 350.871771449343

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 e.g.f.: exp(exp(x)-sec(x))=1+x+1/2!*x2+2/3!*x3+1/4!*x4-8/5!*x5... A13327
Fourier coefficients of the modular form (1/t6a) * (1-6·sqrt(-3)/t6a) * (1-12·sqrt(-3)/t6a) * F6a12. A341567
Number of ternary (0,1,2) sequences without a consecutive '012'. A76264
4-wave sequence. A38197
Define the generalized Pisot sequence T(a(0),a(1)) by: a(n+2) is the greatest integer such that a(n+2)/a(n+1) < a(n+1)/a(n). This is T(3,9). A18919
Let i be in {1,2,3,4} and let r >= 0 be an integer. Let p = {p1, p2, p3, p4} = {-1,0,1,2}, n=3·r+pi, and define a(-1)=1. Then a(n)=a(3·r+pi) gives the quantity of H9,1,0 tiles in a subdivided H9,i,r tile after linear scaling by the factor Qr, where Q=sqrt(x3-2·x) with x=2·cos(π/9). A187503
Let i be in {1,2,3,4} and let r >= 0 be an integer. Let p = {p1, p2, p3, p4} = {-1,0,1,2}, n=3·r+pi, and define a(-1)=0. Then a(n)=a(3·r+pi) gives the quantity of H9,3,0 tiles in a subdivided H9,i,r tile after linear scaling by the factor Qr, where Q=sqrt(x3-2·x) with x=2·cos(π/9). A187505
Let i be in {1,2,3,4} and let r >= 0 be an integer. Let p = {p1, p2, p3, p4} = {-1,0,1,2}, n=3·r+pi, and define a(-1)=0. Then a(n)=a(3·r+pi) gives the quantity of H9,4,0 tiles in a subdivided H9,i,r tile after linear scaling by the factor Qr, where Q=sqrt(x3-2·x) with x=2·cos(π/9). A187506
Second line of 4-wave sequence A038197. A38237
Becomes prime after exactly 9 iterations of f(x) = sum of prime factors of x. A47828