Properties of the Number 18911

Eighteen Thousand Nine Hundred Eleven

Basics

Value: 18910 → 18911 → 18912

Parity: odd

Prime: Yes

Previous Prime: 18899

Next Prime: 18913

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 18911

Divisors: 1, 18911

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100100111011111

Octal: 44737

Duodecimal: AB3B

Hexadecimal: 49df

Square: 357625921

Square Root: 137.51727164251042

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

Prime quadruples: numbers k such that k, k+2, k+6, k+8 are all prime. A7530

Primes of the form 5k² + 5k + 1. A90562

Primes at which the difference pattern X,2,4,2,Y (X and Y >= 6) occurs in A001223. A52165

Primes of the form k² + k + 5. A27755

Primes having only {1, 8, 9} as digits. A385783

Primes p with p + 2 and prime(p) - 2 both prime. A236467

Primes that remain prime through 3 iterations of function f(x) = 6x + 1. A23287

Increasing gaps among twin primes: the smallest prime of the second twin pair. A36062

Primes which remain prime after one and after two applications of the rotate-and-add operation of A086002. A86003

Primes which remain prime after one and after two and after three applications of the rotate-and-add operation of A086002. A86004