Properties of the Number 81013

Eighty-One Thousand Thirteen

Basics

Value: 81012 → 81013 → 81014

Parity: odd

Prime: Yes

Previous Prime: 81001

Next Prime: 81017

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 81013

Divisors: 1, 81013

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: 10011110001110101

Octal: 236165

Duodecimal: 3AA71

Hexadecimal: 13c75

Square: 6563106169

Square Root: 284.6278271708513

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

Smallest of three consecutive primes whose sum is a square. A206279

Primes obtained from other primes by prefixing an 8. A290407

Primes of the form 5·x² - 2·y², where·and y are successive natural numbers. A177077

Smallest members of prime triples, the sum of which results in a perfect square. A309594

a(n) = Fibonacci(4·n+3) - 2, or Fibonacci(2·n)*Lucas(2·n+3). A81013