Properties of the Number -14981

Fourteen Thousand Nine Hundred Eighty-One

Basics

Value: -14982 → -14981 → -14980

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 71 × 211

Divisors: 1, 71, 211, 14981

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11101010000101

Octal: -35205

Duodecimal: -8805

Hexadecimal: -3a85

Square: 224430361

Square Root: 122.39689538546311

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

Pseudoprimes to base 5. A5936

Strong pseudoprimes to base 5. A20231

a(n) = (2·n-1)*(n² -n +6)/6. A49480

Euler pseudoprimes to base 5: composite integers such that abs(5^{(n - 1}/2)) == 1 mod n. A262052

Odd octagonal numbers: (2n+1)*(6n+1). A14641

X-toothpick sequence on Z³ lattice (see Comments for precise definition). A160170

Base-5 Euler-Jacobi pseudoprimes: odd composite k coprime to 5 such that 5^(k-1/2) == (5/k) (mod n), where (5/k) is the Jacobi symbol (or Kronecker symbol). A375914

Composite numbers k == 1, 9 (mod 10) such that 5^(k-1/2) == 1 (mod k). A375915

Odd composite integers m such that A014448(m) == 4 (mod m). A335670

Nonprimes n such that 5ⁿ==5 (mod n). A122782