Properties of the Number -2100

One Hundred

Basics

Value: -2101 → -2100 → -2099

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 3

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 5 ² × 7

Divisors: 1, 2, 3, 4, 5, 6, 7, 10, 12, 14

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -100000110100

Octal: -4064

Duodecimal: -1270

Hexadecimal: -834

Square: 4410000

Square Root: 45.8257569495584

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

Triangle read by rows: The n-th derivative of the logistic function written in terms of y, where y = 1/(1 + exp(-x)). A163626

Irregular triangle read by rows: coefficients C(j,k) of a partition transform for direct Lagrange inversion. A134685

Expansion of the series reversion of x/((1 + x)*(1 - x²)). A291534

Inverse Euler transform of the Euler totient function φ = A000010. A320778

Dirichlet g.f.: 1 / ζ(s)¹⁰. A341836

Triangle of coefficients of polynomials H(n,x) formed from the first (n+1) terms of the power series expansion of ( -x/log(1-x) )ⁿ⁺¹, multiplied by n!. A75263

Inverse of A038303, and generalization of A130595. A165293

Irregular triangle read by rows: row n (n > 0) is the expansion of ∑_m=1..n A001263(n,m)*x^{m - 1}*(1 - x)^{n - m}. A174128

Inversion of e.g.f. formal power series. Partition array in Abramowitz-Stegun (A-St) order. A176740

Triangle read by rows. T(n, k) = ∑_j=0..n-k binomial(-n, j) * A268438(n - k, j). A357340