Properties of the Number 12281

Twelve Thousand Two Hundred Eighty-One

Basics

Value: 12280 → 12281 → 12282

Parity: odd

Prime: Yes

Previous Prime: 12277

Next Prime: 12289

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 12281

Divisors: 1, 12281

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10111111111001

Octal: 27771

Duodecimal: 7135

Hexadecimal: 2ff9

Square: 150822961

Square Root: 110.81967334368028

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(2·n) = 9·2ⁿ - 7, a(2·n+1) = 3·2ⁿ⁺² - 7. A354789

Smallest prime equal to the sum of 2n+1 consecutive primes. A70934

Numbers k such that 3^k - 32 is prime. A219049

Number of bicentered hydrocarbons with n atoms. A200

Primes p such that A001175(p) = (p-1)/4. A308789

T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with no 2X2 subblock having the sum of its diagonal elements less than the absolute difference of its antidiagonal elements. A250973

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of the e.g.f. exp(-x)/(1 - k·x). A320032

Sequence of 2 Pythagorean triangles, each with a leg and hypotenuse prime. The leg of the second triangle is the hypotenuse of the first. A48270

Sequence of 3 Pythagorean triangles, each with a leg and hypotenuse prime. The hypotenuse of each triangle is the leg of the next triangle. A48295

Triangle of 5-Eulerian numbers. A144699