Properties of the Number 26921

Twenty-Six Thousand Nine Hundred Twenty-One

Basics

Value: 26920 → 26921 → 26922

Parity: odd

Prime: Yes

Previous Prime: 26903

Next Prime: 26927

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 26921

Divisors: 1, 26921

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110100100101001

Octal: 64451

Duodecimal: 136B5

Hexadecimal: 6929

Square: 724740241

Square Root: 164.0762018087937

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

Where prime race 4m-1 vs. 4m+1 is tied. A7351

Primes p such that the number of primes less than p equal to 1 mod 4 is one less than the number of primes less than p equal to 3 mod 4. A96448

Poincaré series [or Poincare series] (or Molien series) for a certain four-fold wreath product P₄. A91434

Fixed points for prime number permutation A108546. A108547

Primes prime(k) such that 2*(prime(k)² - prime(k-1)²) is a perfect square. A335410

Primes of the form 16·m² + 25 for m=1,2,3,... A87857

Primes p such that the multiplicative order of 2 modulo p is (p-1)/10. A152310

Primes of the form 16·m² + 25, m=1,3,5,... A87856

Larger of two consecutive primes whose sum is a square. A118591

a(n) = 3n³ - 2n² + n - 1. A130885