Properties of the Number 23909

Twenty-Three Thousand Nine Hundred Nine

Basics

Value: 23908 → 23909 → 23910

Parity: odd

Prime: Yes

Previous Prime: 23899

Next Prime: 23911

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 23909

Divisors: 1, 23909

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101110101100101

Octal: 56545

Duodecimal: 11A05

Hexadecimal: 5d65

Square: 571640281

Square Root: 154.62535367784935

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

Balanced primes of order four. A82079

G.f. satisfies: A(x) = 1 + x/A(-x·A(x)⁶)². A213098

T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1 or 2 horizontally or antidiagonally adjacent elements, with upper left element zero. A301841

T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A302528

Primes p with p + 2 and prime(p) - 2 both prime. A236467

Lesser of twin primes p1 such that p1+(p2²-p1²) and p2+(p2²-p1²) are prime numbers. A174922

Final prime adjoined in the smallest term of A019518 divisible by 73ⁿ. A185704

a(1)=2; a(n) for n>1 is the smallest prime number > a(n-1) such that the concatenation of all previous terms is also prime. A80155

Number of toothpicks after n stages of 3-D toothpick structure defined in Comments. A170876

The first member of a twin prime pair whose sum equals the sums of two consecutive smaller pairs of twin primes. A225943