Properties of the Number 18107

Eighteen Thousand One Hundred Seven

Basics

Value: 18106 → 18107 → 18108

Parity: odd

Prime: No

Previous Prime: 18097

Next Prime: 18119

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 19 × 953

Divisors: 1, 19, 953, 18107

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011010111011

Octal: 43273

Duodecimal: A58B

Hexadecimal: 46bb

Square: 327863449

Square Root: 134.56225325105106

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

Numerator of the n-th alternating harmonic number, ∑_k=1..n (-1)^k+1/k. A58313

Number of integer partitions of n that can be partitioned into sets with distinct sums. A381992

Numerator of ∑_k=1..n 1/(n+k). A82687

Last number of height n in Recamán's sequence A005132. A64293

Numerator of the fraction n*∑_k=1..n 1/(n+k). A117731

Let u(1) = x and u(n+1) = (n²/u(n)) + 1 for n >= 1; then a(n) is such that u(n) = (b(n)*x + c(n))/(a(n)*x + d(n)) (in lowest terms) and a(n), b(n), c(n), d(n) are positive integers. A75830

Numbers k such that k·2^m+1 are composites for all exponents m in the range 0<=m<=k. A61153

Numerator of the product of n and the n-th alternating harmonic number, ∑_k=1..n (-1)^k+1/k. A119787

Number of vertices in regular n-gon after 2 generations of mitosis. A349967

a(n) = (1/1 - 1/2 + ... + (-1)^n-1/n)*lcm{1..n}. A25530