Properties of the Number 266

Two Hundred Sixty-Six

Basics

Value: 265 → 266 → 267

Parity: even

Prime: No

Previous Prime: 263

Next Prime: 269

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 × 7 × 19

Divisors: 1, 2, 7, 14, 19, 38, 133, 266

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100001010

Octal: 412

Duodecimal: 1A2

Hexadecimal: 10a

Square: 70756

Square Root: 16.30950643030009

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

Triangle of Stirling numbers of the second kind, S2(n,k), n >= 1, 1 <= k <= n. A8277

Numbers k such that (266·10^k + 1)/3 is prime. A269303

Triangle of Stirling numbers of 2nd kind, S(n,k), n >= 0, 0 <= k <= n. A48993

Twice partitioned numbers: the number of ways a number can be partitioned into not necessarily different parts and each part is again so partitioned. A63834

Sphenic numbers: products of 3 distinct primes. A7304

Number of partitions of n into parts 5k+1 or 5k+4. A3114

Triangle of trinomial coefficients T(n,k) (n >= 0, 0 <= k <= 2·n), read by rows: n-th row is obtained by expanding (1 + x + x²)ⁿ. A27907

Average of two consecutive odd primes. A24675

Self numbers or Colombian numbers (numbers that are not of the form m + sum of digits of m for any m). A3052

Number of partitions of n into pairwise relatively prime parts. A51424