Properties of the Number 80911

Eighty Thousand Nine Hundred Eleven

Basics

Value: 80910 → 80911 → 80912

Parity: odd

Prime: Yes

Previous Prime: 80909

Next Prime: 80917

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 80911

Divisors: 1, 80911

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110000001111

Octal: 236017

Duodecimal: 3A9A7

Hexadecimal: 13c0f

Square: 6546589921

Square Root: 284.44858937952216

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

First term of balanced prime quartets: p(m+1)-p(m) = p(m+2)-p(m+1) = p(m+3)-p(m+2). A54800

Initial prime in set of 4 consecutive primes with common difference 6. A33451

Primes p such that p, p+6, p+12, p+18 are consecutive primes and p = 6·k+1 for some k. A90837

Primes p such that the differences between the 5 consecutive primes starting with p are (6,6,6,4). A78969

Numbers k such that Lucas(2k)/3 is prime. A74304

Greater of twin primes p such that 3·p-2 is also greater of twin primes. A177336

Number of -n..n circular arrays x(0..5) of 6 elements with zero sums of x(i) and x(i)*x((i+1) mod 6). A202008

Number of 2 X n arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 2 X n array. A220011

Number of (not necessarily maximal) cliques in the n-polygon diagonal intersection graph. A300524

a(n) = binomial(n!,(n-1)!). A80911