Properties of the Number 12871

Twelve Thousand Eight Hundred Seventy-One

Basics

Value: 12870 → 12871 → 12872

Parity: odd

Prime: No

Previous Prime: 12853

Next Prime: 12889

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 61 × 211

Divisors: 1, 61, 211, 12871

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11001001000111

Octal: 31107

Duodecimal: 7547

Hexadecimal: 3247

Square: 165662641

Square Root: 113.45042970390196

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

Composite numbers k coprime to 13 such that k divides A006190(k-Kronecker(13,k)). A327653

Odd composite integers m such that A006497(m) == 3 (mod m). A335669

a(n) = binomial(n, floor(n/2)) + 1. A51920

Semiprimes in A003215. A113530

Number of compositions of 3n in which the minimal multiplicity of parts equals n. A244174

Expansion of (1 - x⁴ - x⁵)/((1 - x⁴ - x⁵)² - 4·x⁹). A376731

Centered 13-gonal numbers. A69126

Solution to the non-squashing boxes problem (version 1). A89054

Odd composite integers m such that A006497(m-J(m,13)) == 2·J(m,13) (mod m), where J(m,13) is the Jacobi symbol. A339126

a(n) = binomial(2*(n - 1), n - 1) + 1. A323230