Properties of the Number 19318

Nineteen Thousand Three Hundred Eighteen

Basics

Value: 19317 → 19318 → 19319

Parity: even

Prime: No

Previous Prime: 19309

Next Prime: 19319

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 13 × 743

Divisors: 1, 2, 13, 26, 743, 1486, 9659, 19318

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100101101110110

Octal: 45566

Duodecimal: B21A

Hexadecimal: 4b76

Square: 373185124

Square Root: 138.98920821416317

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

M-sequences m₀,m₁,m₂,m₃ with m₁ < n. A11819

M-sequences from multicomplexes on at most 11 variables with no monomial of degree more than n-1. A11808

Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1), where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences. A294541

a(n) = prime(n)²-3. A182200

a(n) = a(n-1) + a(n-2) + 3·a(n-3) with a(0) = 1, a(1) = 2, a(2) = 5. A247594

a(n) = A000055(n) - 2. A144527

Values of c such that p²-c and p²+c are both positive primes, for the special case when p²-c = 3, or c = p²-3, where p is a prime. A274610

Floor of the area of consecutive Prime-Indexed Prime triangles. A119659

Numbers k such that k divides the sum of largest parts of all partitions of k. A302752

Number of inequivalent ways of choosing n squares from an n X n board, considering rotations and reflections to be the same. A19318