Properties of the Number 30173

Thirty Thousand One Hundred Seventy-Three

Basics

Value: 30172 → 30173 → 30174

Parity: odd

Prime: No

Previous Prime: 30169

Next Prime: 30181

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 11 × 13 × 211

Divisors: 1, 11, 13, 143, 211, 2321, 2743, 30173

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111010111011101

Octal: 72735

Duodecimal: 15565

Hexadecimal: 75dd

Square: 910409929

Square Root: 173.70377082838473

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) = a(n-1) - 2·a(n-2) with a(0) = 2, a(1) = 1. A2249

a(n) is the unique odd positive solution y of 2ⁿ = 7x² + y². A77021

a(n) = either 4a(n-1)+1 or 4a(n-1)+3 depending on corresponding term of A005614, +3 for 0, +1 for 1. A66744

First numerator and then denominator of the elements to the right of the central elements of the 1/5-Pascal triangle (by row), excluding 1's and 5's. A46616

Distinct odd numbers in the numerators of the 1/5-Pascal triangle (by row). A46624

Distinct numbers in writing first numerator and then denominator of each element to the right of the central elements of the 1/5-Pascal triangle (by row). A46627

Distinct odd numbers in writing first numerator and then denominator of each element to the right of the central elements of the 1/5-Pascal triangle (by row). A46628

Differences p(i)-p(j) between primes, sorted in numerical order. A30173

a(n) = ∑_k=0..n (-1)^{n - k} * binomial(n, k) * binomial(n + k - 1, n - k). A350290