Properties of the Number 268

Two Hundred Sixty-Eight

Basics

Value: 267 → 268 → 269

Parity: even

Prime: No

Previous Prime: 263

Next Prime: 269

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 67

Divisors: 1, 2, 4, 67, 134, 268

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100001100

Octal: 414

Duodecimal: 1A4

Hexadecimal: 10c

Square: 71824

Square Root: 16.3707055437449

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

a(n) = prime(n) - 1. A6093

Numbers that are the sum of 2 successive primes. A1043

Numbers m such that 6m-1, 6m+1 are twin primes. A2822

Numbers which are the product of a prime and the square of a different prime (p² * q). A54753

Numbers k such that the k-th and the (k+1)-st primes are twin primes. A29707

Numbers that contain even digits only. A14263

Order of 2 modulo the n-th prime. A14664

a(n) = 8·n + 4. A17113

Period of decimal expansion of 1/(n-th prime) (0 by convention for the primes 2 and 5). A2371

Numbers with exactly 3 ones in binary expansion. A14311