Properties of the Number -80021

Eighty Thousand Twenty-One

Basics

Value: -80022 → -80021 → -80020

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 80021

Divisors: 1, 80021

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

9108 Try Today's Challenge

Representations

Binary: -10011100010010101

Octal: -234225

Duodecimal: -3A385

Hexadecimal: -13895

Square: 6403360441

Square Root: 282.8798331447472

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

Primes p with f(p), f(f(p)) and f(f(f(p))) all prime, where f(n) = prime(n) - n + 1. A235934

Numbers k such that 31·2^k-1 is prime. A50541

McKay-Thompson series of class 28A for Monster. A58606

Smallest prime in which the n-th significant digit is an 8. A69596

Number of ways of dividing an n X 3 rectangle into integer-sided rectangles, up to rotations and reflections. A361525