Properties of the Number 20963

Twenty Thousand Nine Hundred Sixty-Three

Basics

Value: 20962 → 20963 → 20964

Parity: odd

Prime: Yes

Previous Prime: 20959

Next Prime: 20981

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 20963

Divisors: 1, 20963

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101000111100011

Octal: 50743

Duodecimal: 1016B

Hexadecimal: 51e3

Square: 439447369

Square Root: 144.78604905169558

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

Numbers k such that 15^k - 2 is a prime. A128458

Least prime in A031936 (lesser of 18-twins) whose distance to the next 18-twin is 2·n. A52358

Numbers that are the sum of 8 nonzero 8th powers. A3386

A list of equal temperaments (equal divisions of the octave) whose nearest scale steps are closer and closer approximations to the ratios of three complementary pairs of simple musical tones: 7/6 and 12/7, 6/5 and 5/3 and 7/5 and 10/7. A60529

Primes such that the sum of the factorials of the digits is a perfect square. A52279

a(n) is the nearest integer to the area of a triangle with sides prime(n), prime(n+1), prime(n+2). A338267

Least prime summand of A254859. A393415

Smallest prime p of the form p = 3ⁿ + k, where k has n prime divisors counted with multiplicity. A212821

Numbers k such that abs(A335581(k))/2¹⁴ is prime. A335582

Primes abs(A335581(k))/2¹⁴ for k in A335582. A335591