Properties of the Number 263

Two Hundred Sixty-Three

Basics

Value: 262 → 263 → 264

Parity: odd

Prime: Yes

Previous Prime: 257

Next Prime: 269

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 263

Divisors: 1, 263

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100000111

Octal: 407

Duodecimal: 19B

Hexadecimal: 107

Square: 69169

Square Root: 16.217274740226856

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

The prime numbers. A40

Prime numbers at the beginning of the 20th century (today 1 is no longer regarded as a prime). A8578

Primes of the form x² + xy + 2y², with·and y nonnegative. A106856

Primes of the form 4·k + 3. A2145

Odd primes. A65091

Safe primes p: (p-1)/2 is also prime. A5385

Balanced primes (of order one): primes which are the average of the previous prime and the following prime. A6562

Ramanujan primes R_n: a(n) is the smallest number such that if x >= a(n), then π(x) - π(x/2) >= n, where π(x) is the number of primes <= x. A104272

Primes of the form 3n-1. A3627

Primes of the form 6k-1. A7528

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