Properties of the Number 30863

Thirty Thousand Eight Hundred Sixty-Three

Basics

Value: 30862 → 30863 → 30864

Parity: odd

Prime: No

Previous Prime: 30859

Next Prime: 30869

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 7 × 4409

Divisors: 1, 7, 4409, 30863

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100010001111

Octal: 74217

Duodecimal: 15A3B

Hexadecimal: 788f

Square: 952524769

Square Root: 175.67868396592684

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) = T(n, n-1), T given by A026519. Also a(n) = number of integer strings s(0), ..., s(n), counted by T, such that s(n) = 1. A26521

Let p = n-th prime == 3 mod 8; a(n) = sum of quadratic residues mod p that are < p/2. A282721

a(n) = T(n,n-1), T given by A026536. Also a(n) = number of integer strings s(0), ..., s(n), counted by T, such that s(n) = 1. A26538

Irregular triangle read by rows: T(n,m) = number of lattice paths of type {B^H}_R terminating at point (n, m). A291084

[ exp(15/19)*n! ]. A30863