Properties of the Number 28663

Twenty-Eight Thousand Six Hundred Sixty-Three

Basics

Value: 28662 → 28663 → 28664

Parity: odd

Prime: Yes

Previous Prime: 28661

Next Prime: 28669

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 28663

Divisors: 1, 28663

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111111110111

Octal: 67767

Duodecimal: 14707

Hexadecimal: 6ff7

Square: 821567569

Square Root: 169.30150619530826

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

Primes for which the sum of all preceding odd-indexed prime gaps is exactly one greater than the sum of all preceding even-indexed prime gaps. A282178

Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 670", based on the 5-celled von Neumann neighborhood. A283607

The sum of the first n terms of the sequence is the concatenation of the first n bits of the sequence read as binary, with a(1) = 1. A308092

Primes that remain prime through 3 iterations of function f(x) = 8x + 5. A23293

Primes of the form 7n² - 9. A201854

Engel expansion of cos(1)/(1+cos(1)). A222482

Number of compositions of n into distinct parts with exactly two descents. A241721

Largest prime all of whose substrings in its base n representation are primes. A245277

a(1) = 3, a(n + 1) = 1 + a(n) + least odd prime factor of a(n). A144751

Primes of the form 7n³-9. A200954