Properties of the Number 80085

Eighty Thousand Eighty-Five

Basics

Value: 80084 → 80085 → 80086

Parity: odd

Prime: No

Previous Prime: 80077

Next Prime: 80107

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 19 × 281

Divisors: 1, 3, 5, 15, 19, 57, 95, 281, 285, 843

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011100011010101

Octal: 234325

Duodecimal: 3A419

Hexadecimal: 138d5

Square: 6413607225

Square Root: 282.99293277394753

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

Place n equally spaced points on each side of a square, and join each of these points by a chord to the 3·n new points on the other three sides: sequence gives number of interior vertices in the resulting planar graph. A367277

Number of factors of 2 in the factorial of the n-th prime, counted with multiplicity. A80085

Primes p such that 2·p + 11 is a square. A269784

Table read by antidiagonals: Place k equally spaced points on each side of a regular n-gon and join every pair of these n·k points by a chord; T(n,k) (n >= 3, k >= 0) gives the number of internal vertices in the resulting planar graph. A367303