Properties of the Number 26139

Twenty-Six Thousand One Hundred Thirty-Nine

Basics

Value: 26138 → 26139 → 26140

Parity: odd

Prime: No

Previous Prime: 26119

Next Prime: 26141

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 8713

Divisors: 1, 3, 8713, 26139

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110011000011011

Octal: 63033

Duodecimal: 13163

Hexadecimal: 661b

Square: 683247321

Square Root: 161.67560112769027

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

Absolute discriminants of complex quadratic fields with 3-class group of elementary abelian type (3,3) of rank 2. A242863

Numbers n such that n is a substring of its square in base 8 (written in base 10). A18832

Absolute discriminants of complex quadratic fields with 3-class group of type (3,3) and Hilbert 3-class field tower of exact length 2. A242864

Numbers k such that k³ contains a pandigital substring. A115933

a(n) = (∑_k=0..n-1 (-1)^k*(2k+1)*C(n-1,k)²*C(n+k,k)²)/n, where C(n,k) denotes the binomial coefficient n!/(k!*(n-k)!). A246511

Width of polyominoes in A282389. A282390

Absolute discriminants of complex quadratic fields with 3-class group of type (3,3) and 3-principalization type (2241). A247689

Concatenate the terms of A027750 (omitting spaces and commas), chop into blocks of length 5, then omit any leading zeros. A362446

Absolute discriminants of complex quadratic fields with 3-class group of type (3,3) whose second 3-class group is located on the sporadic part of the coclass graph G(3,2) outside of coclass trees. A247691

a(n) = s(k), where k is the n-th number such that s(j) < s(k) for all j < k, where s = A026136. Also a(n) = 2·t(n) - 1, where t = A026138. A26139