Properties of the Number 20983

Twenty Thousand Nine Hundred Eighty-Three

Basics

Value: 20982 → 20983 → 20984

Parity: odd

Prime: Yes

Previous Prime: 20981

Next Prime: 21001

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 20983

Divisors: 1, 20983

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 101000111110111

Octal: 50767

Duodecimal: 10187

Hexadecimal: 51f7

Square: 440286289

Square Root: 144.8551000137724

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

Recursive prime generating sequence. A39726

List of strictly non-palindromic twin primes {p, p+2}. A138329

A213784/12. A213789

Primes congruent to 60 mod 61. A142858

a(n) is the least prime of the form prime(n)*p + prime(n+1)*q + prime(n+2)*r where p,q,r are consecutive primes. A340817

Twin primes p such that the absolute difference of p and the reverse of its twin is a twin prime. A342216

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 78 ones. A31846

10000n+1, 10000n+3, 10000n+7, 10000n+9 are all primes. A64963

Primes arising in A085042: a(n) = the n-th partial sum of A085042. A85043

Primes of the form 88x²+32xy+127y². A140630