Properties of the Number 17899

Seventeen Thousand Eight Hundred Ninety-Nine

Basics

Value: 17898 → 17899 → 17900

Parity: odd

Prime: No

Previous Prime: 17891

Next Prime: 17903

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 7 × 2557

Divisors: 1, 7, 2557, 17899

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100010111101011

Octal: 42753

Duodecimal: A437

Hexadecimal: 45eb

Square: 320374201

Square Root: 133.7871443749361

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

G.f.: A(x) = ∑_n>=0 (3n)!/(n!)³ * x³ⁿ/(1-x-x²)³ⁿ⁺¹. A181545

T(n,k) = Number of n X k 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2, 3 or 5 neighboring 1's. A297802

Positions of zeros in A165597. A165598

"EFJ" (unordered, size, labeled) transform of 1,3,5,7,... A32300

Indices of record values in A216476. A216502

Expansion of ∏_k>=1 1/(1 - k*(x^2·k+1)). A266138

"DFJ" (bracelet, size, labeled) transform of 1,3,5,7... A32212

Least integer having a larger digital sum than the previous term and such that 10^n-1 + a(n) is a prime. A199190

Values of n such that L(18) and N(18) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A227521

Number of nX4 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2, 3 or 5 neighboring 1s. A297798