Properties of the Number 80311

Eighty Thousand Three Hundred Eleven

Basics

Value: 80310 → 80311 → 80312

Parity: odd

Prime: No

Previous Prime: 80309

Next Prime: 80317

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 7 ² × 11 × 149

Divisors: 1, 7, 11, 49, 77, 149, 539, 1043, 1639, 7301

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011100110110111

Octal: 234667

Duodecimal: 3A587

Hexadecimal: 139b7

Square: 6449856721

Square Root: 283.39195471996027

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) = 5ⁿ+3ⁿ-1. A155603

Denominators of the convergents of the continued fraction for sqrt{1 - 1/sqrt{2}}, the abscissa of the point of bisection of the arc of the unit lemniscate (x² + y²)² = x² - y² in the first quadrant. A154742

G.f. A(x) satisfies: A(x) = 1 + x + x² * A(x/(1 - 5·x)) / (1 - 5·x). A351056

Numbers k such that k+1 is a divisor of 3^k + 5^k. A234536

a(n) = floor(sqrt(F(n+2)² + F(n)²)), where F(n) = A000045(n). A245271

Orbit size of each tree encoded by A014486(n) under Meeussen's bf<->df map on binary trees. A80311