Properties of the Number 12091

Twelve Thousand Ninety-One

Basics

Value: 12090 → 12091 → 12092

Parity: odd

Prime: No

Previous Prime: 12073

Next Prime: 12097

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 107 × 113

Divisors: 1, 107, 113, 12091

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10111100111011

Octal: 27473

Duodecimal: 6BB7

Hexadecimal: 2f3b

Square: 146192281

Square Root: 109.95908329919816

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) = prime(n)*prime(n+2). A90076

Product of the n-th sexy prime pair. A111192

Numbers n such that exactly two positive d in the range d <= n/2 exist which divide binomial(n-d-1, d-1) and which are not coprime to n. A178098

Sequence of pairwise relatively prime numbers of class P₅ (see comment in A275246). A275249

S₅ sequence in partition of integers > 1 described in A240521. A240522

Nonprime squarefree numbers whose prime indices all have the same ω (A001222) and the same sum of prime indices (A056239). A327908

Semiprimes whose prime factors are of equal binary length and which differ from each other in exactly three bit positions. A261075

Numbers m such that Stern polynomial B(m,x) has no irreducible polynomial factors that themselves are Stern polynomials. The initial a(1) = 1 is included by convention. A389918

Numbers having exactly two distinct prime factors p, q with q = p+6. A143205

a(n) = 8·n² - 2·n + 1. A185438