Properties of the Number -8081

Eighty-One

Basics

Value: -8082 → -8081 → -8080

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 8081

Divisors: 1, 8081

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1111110010001

Octal: -17621

Duodecimal: -4815

Hexadecimal: -1f91

Square: 65302561

Square Root: 89.89438247187641

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

Numerators in expansion of 1/(10+sqrt(36+x)). A51550

Number of partitions of n into parts 3k and 3k+1 with at least one part of each type. A35618

Primes formed by concatenating n with n+1. A30458

Primes that do not contain any other prime as a proper substring. A33274

Primes with first digit 8. A45714

Primes having only {0, 1, 8} as digits. A61247

Primes whose decimal expansion is a concatenation of two or more consecutive increasing numbers (no leading zeros allowed). A52087

Initial term in sequence of four consecutive primes separated by 3 consecutive differences each <=6 (i.e., when d = 2, 4 or 6) and forming d-pattern=[6,2,4]; short d-string notation of pattern = [624]. A78853

a(1) = 8; a(n) is smallest number >= a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime. A46258

Primes of the form x³ + 2y³, with x,y >0. A173587