Properties of the Number -68491

Sixty-Eight Thousand Four Hundred Ninety-One

Basics

Value: -68492 → -68491 → -68490

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 68491

Divisors: 1, 68491

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4938 Try Today's Challenge

Representations

Binary: -10000101110001011

Octal: -205613

Duodecimal: -33777

Hexadecimal: -10b8b

Square: 4691017081

Square Root: 261.7078523850593

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) = (2n+1)²ⁿ⁺¹ mod 2²ⁿ⁺¹. A178537

Primes of the form (2n-1)^2n-1 mod 2^2n-1. A178966

Primes containing nonprime digits (from 1 to 9) in their decimal expansion and whose digits are distinct, i.e., consisting of only digits 1, 4, 6, 8, 9. A323391

Primes p such that p²+q+r, p+q²+r and p+q+r² are all prime, where q and r are the next two primes after p. A348353

Primes p such that there exist primes p'<p"<p"'<p""<p such that the concatenation of any two among the {p,...,p""} is prime. A139005