Properties of the Number 20879

Twenty Thousand Eight Hundred Seventy-Nine

Basics

Value: 20878 → 20879 → 20880

Parity: odd

Prime: Yes

Previous Prime: 20873

Next Prime: 20887

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 20879

Divisors: 1, 20879

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101000110001111

Octal: 50617

Duodecimal: 100BB

Hexadecimal: 518f

Square: 435932641

Square Root: 144.49567467574937

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

a(n+3) = 2a(n+2) - 3a(n+1) + 2a(n); a(0) = 1, a(1) = 1, a(2) = 0. A105578

Primes of the form n²-n-1 (for some n) such that p²-p-1 is also prime. A237642

Number of partitions of n containing m(2) as a part, where m denotes multiplicity. A240487

Primes in A161190. A161191

Rocket Sequence 34: a(0)=34, a(n) = A073846(a(n-1)). A261314

Prime(n) and prime(n+2) use the same digits. A69794

Primes of the form 4·n² + 2·n -1. A155737

Consecutive pairs of prime point sums in A161191 (includes triples). A161192

Primes of the form 43·n² + 3·n + 1. A185658

a(n) = 3·a(n-1) - 5·a(n-2), with a(0)=0, a(1)=1. A190959