Properties of the Number -131977

One Hundred Thirty-One Thousand Nine Hundred Seventy-Seven

Basics

Value: -131978 → -131977 → -131976

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 271 × 487

Divisors: 1, 271, 487, 131977

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100000001110001001

Octal: -401611

Duodecimal: -64461

Hexadecimal: -20389

Square: 17417928529

Square Root: 363.2863884045203

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

Odd numbers k > 1 such that gcd(5,k) = 1 and 5^(k-1/2) == -(5/k) (mod k), where (5/k) is the Jacobi symbol (or Kronecker symbol); Euler pseudoprimes to base 5 (A262052) that are not Euler-Jacobi pseudoprimes to base 5 (A375914). A375816

Strong pseudoprimes to base 12. A20238

Semiprimes k such that k+4, k+6, k+9, k+10 and k+14 are also semiprimes. A360666