Properties of the Number 18203

Eighteen Thousand Two Hundred Three

Basics

Value: 18202 → 18203 → 18204

Parity: odd

Prime: No

Previous Prime: 18199

Next Prime: 18211

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 109 × 167

Divisors: 1, 109, 167, 18203

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100011100011011

Octal: 43433

Duodecimal: A64B

Hexadecimal: 471b

Square: 331349209

Square Root: 134.91849391391827

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 σ(k) = σ(k+6). A15866

The number of possible values of the squarefree kernel (A007947) shared by at least two solutions·to A056239(x) = n. A88318

Number of partitions of n containing a prime number of distinct primes and an arbitrary number of nonprimes. A344715

Spiral sieve using Fibonacci numbers. A5624

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 19 ones. A31787

Initial pile sizes that guarantee a win for player 2 in a variant of Fibonacci Nim where the players may not take one stone. A52492

Numbers n such that n and its reversal are distinct brilliant numbers (A078972). A97435

a(n) is least number k >= 3 such that (k^2ⁿ + (k-2)^2ⁿ)/2 is prime. A302387

Number T(n,k) of equivalence classes of ways of placing k 3 X 3 tiles in an n X 9 rectangle under all symmetry operations of the rectangle; irregular triangle T(n,k), n>=3, 0<=k<=2·floor(n/3), read by rows. A238582

Possible numbers of complements of topologies on 12 points. A18203