Properties of the Number 26243

Twenty-Six Thousand Two Hundred Forty-Three

Basics

Value: 26242 → 26243 → 26244

Parity: odd

Prime: No

Previous Prime: 26237

Next Prime: 26249

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 7 × 23 × 163

Divisors: 1, 7, 23, 161, 163, 1141, 3749, 26243

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110011010000011

Octal: 63203

Duodecimal: 1322B

Hexadecimal: 6683

Square: 688695049

Square Root: 161.99691355084516

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

a(n) = (4·n+1)*(4·n+3). A1539

a(n) = 36n² - 1. A136017

a(n) = 4·3ⁿ-1. A171498

Numbers of the form i·9^j-1 (i=1..8, j >= 0). A140576

T(n,k)=Number of nXk binary arrays with every 1 having exactly one king-move neighbor equal to 1. A183442

a(n) = n·9ⁿ - 1. A64755

n such that A205592(n) > n. A205594

Rectangular companion array to M(n,k), given in A239126, showing the end numbers N(n, k), k >= 1, for the Collatz operation (ud)ⁿ, n >= 1, ending in an odd number, read by antidiagonals. A239127

Number of α-β evaluations in a tree of depth n and branching factor b=3. A60647

a(n) = n-th derivative of Sec(Exp(z)-1) at z=0. A139134