Properties of the Number 26309

Twenty-Six Thousand Three Hundred Nine

Basics

Value: 26308 → 26309 → 26310

Parity: odd

Prime: Yes

Previous Prime: 26297

Next Prime: 26317

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 26309

Divisors: 1, 26309

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110011011000101

Octal: 63305

Duodecimal: 13285

Hexadecimal: 66c5

Square: 692163481

Square Root: 162.2004932174992

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

Primes q = 4·p+1, where p == 2 (mod 5) is also prime. A221981

Balanced primes of order fourteen. A300365

Primes p such that continued fraction of (1+sqrt(p))/2 has period 5 : primes in A146330. A146350

Primes p such that p·q*r + 6 and p·q*r - 6 are primes where q and r are the next two primes after p. A240715

Primes whose position in the Wythoff array is immediately followed by a prime both in the next column and the next row. A352537

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 355", based on the 5-celled von Neumann neighborhood. A271399

Happy Honaker primes. A343192

Primes p whose reverse q is a semiprime, and of p+q and its reverse one is a prime and the other is a semiprime. A350781

a(n) = [ 1/(2·t(n+1) - t(n) - t(n+2)) ], where t(n) = tan(π/2 - 1/n) satisfies n-1 < t(n) < n for all n >= 1. A24817

a(n) = n-th nonnegative integer k satisfying sin(k) < sin(k+1). A26309