Properties of the Number 27043

Twenty-Seven Thousand Forty-Three

Basics

Value: 27042 → 27043 → 27044

Parity: odd

Prime: Yes

Previous Prime: 27031

Next Prime: 27059

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 27043

Divisors: 1, 27043

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110100110100011

Octal: 64643

Duodecimal: 13797

Hexadecimal: 69a3

Square: 731323849

Square Root: 164.4475600305459

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

Irregular triangle read by rows: T(n,k) is the number of inequivalent connected induced k-vertex subgraphs of the hypercube graph of dimension n >= 0, 1 <= k <= 2ⁿ. A369605

For a line L in the plane, let C(L) denote the number of prime points [k, prime(k)] on L, and let M(L) denote the maximum prime(k) for any of these points; a(n) = minimum M(L) over all lines with C(L) = n, or -1 if there is no such line. A376187

Discriminants of imaginary quadratic fields with class number 19 (negated). A46016

Primes p such that p+2⁴, p+2⁶ and p+2⁸ are all primes. A269257

The number of vertices on a vesica piscis formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts. A341878

∏_n>=1 1 / (1 - a(n)*xⁿ) = 1 + ∑_n>=1 σ(n)*xⁿ, where σ = A000203. A353947

Denominator of next-best approximation to harmonic numbers. a(n) = Denominator of (A055573(n)-1)th convergent of n-th harmonic number, ∑_k=1..n 1/k. A113124

a(n) = prime(2·n*(n+1)+1). A78746

Primes of the form 10n² + 3. A201710

Partial sums of A299894. A299895