Properties of the Number 15287

Fifteen Thousand Two Hundred Eighty-Seven

Basics

Value: 15286 → 15287 → 15288

Parity: odd

Prime: Yes

Previous Prime: 15277

Next Prime: 15289

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 15287

Divisors: 1, 15287

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11101110110111

Octal: 35667

Duodecimal: 8A1B

Hexadecimal: 3bb7

Square: 233692369

Square Root: 123.64060821590938

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

Smallest number of complexity n: smallest number requiring n 1's to build using + and *. A5520

Irregular primes with irregularity index three. A60975

Primes p such that (p-1)/2 and (p-3)/4 are also prime. A66179

Number of ways of arranging the numbers 1..n in a circle so that there is no consecutive triple i, i+1, i+2 or i, i-1, i-2 (mod n). A78673

Primes p of the form 6n-1 such that p-1 is a semiprime and p+2 is prime or prime squared. A181669

First noncomposite number reached when iterating the map x -> x', when starting from x = A351255(n). Here x' is the arithmetic derivative of x, A003415. A351259

Number of achiral series-parallel networks with n elements. A339159

Smaller term of closest safe prime pairs. A59323

Numbers which are primes and which remain prime for three successive applications of incrementing each digit by 2 with carries ignored. A88787

E.g.f.: exp(sin(arctan(x))). A12019