Properties of the Number 80983

Eighty Thousand Nine Hundred Eighty-Three

Basics

Value: 80982 → 80983 → 80984

Parity: odd

Prime: No

Previous Prime: 80963

Next Prime: 80989

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 7 × 23 × 503

Divisors: 1, 7, 23, 161, 503, 3521, 11569, 80983

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110001010111

Octal: 236127

Duodecimal: 3AA47

Hexadecimal: 13c57

Square: 6558246289

Square Root: 284.5751218922694

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

T(n,k)=Number of length n+4 0..k arrays with no consecutive five elements summing to more than 2·k. A241936

a(n) = (A112565(n) - 1)/n for n>=1. A112566

Expansion of e.g.f.: exp(1 / (1 - tan(x)) - 1). A331610

Number of length n+4 0..3 arrays with no consecutive five elements summing to more than 2·3. A241931

Number of length 6+4 0..n arrays with no consecutive five elements summing to more than 2·n. A241942

Least k, 1 <= k <= 2ⁿ, such that the continued fraction for 2ⁿ/k contains the maximum number of elements. A89636

Smallest triangular number having n² as divisor. A80983