Properties of the Number 18143

Eighteen Thousand One Hundred Forty-Three

Basics

Value: 18142 → 18143 → 18144

Parity: odd

Prime: Yes

Previous Prime: 18133

Next Prime: 18149

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 18143

Divisors: 1, 18143

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011011011111

Octal: 43337

Duodecimal: A5BB

Hexadecimal: 46df

Square: 329168449

Square Root: 134.6959539110214

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

T(n,k)=Number of length n 0..k arrays with each partial sum starting from the beginning no more than one standard deviation from its mean. A244788

Number of 6-almost primes 6ap such that 2ⁿ < 6ap <= 2ⁿ⁺¹. A120037

a(n) = 14·n² - 1. A158485

Non-palindromic balanced primes. A256076

Numbers k such that k⁴ = x³ + y² has an integer solution. A96741

Primes of the form 14 n²-1. A143832

Smallest prime p = n·m + 1 that divides m^m - 1 for some m > 1. A125556

a(n) = 56·n² - 1. A158658

Integers of the form 4n+3 for which ∑_i=1..u J(i,4n+3) obtains value zero exactly 7 times, when u ranges from 1 to (4n+3). Here J(i,k) is the Jacobi symbol. A166057

Largest of a quadruple of primes p[1..4] such that (p[k]+1, k=1..4) is in geometric progression. A373464