Properties of the Number 23108

Twenty-Three Thousand One Hundred Eight

Basics

Value: 23107 → 23108 → 23109

Parity: even

Prime: No

Previous Prime: 23099

Next Prime: 23117

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 53 × 109

Divisors: 1, 2, 4, 53, 106, 109, 212, 218, 436, 5777

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101101001000100

Octal: 55104

Duodecimal: 11458

Hexadecimal: 5a44

Square: 533979664

Square Root: 152.0131573252789

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

Index of Mersenne number A000225 that is also Mersenne prime A000668, minus n-th prime: a(n) = A000043(n) - A000040(n). A153801

Hypercomma numbers: n occurs in the sequence S[k+1]=S[k]+10·last_digit(S[k-1])+first_digit(S[k]) for each "legal" splitting n=concat(S[0],S[1]). A166508

3-comma numbers: n occurs in the sequence S[k+1]=S[k]+10·last_digit(S[k-1])+first_digit(S[k]) for three different splittings n=concat(S[0],S[1]). A166513

a(n) = 16·n² + 4. A158444

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 76. A31754

Antidiagonal sums of A163280. A163983

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 149", based on the 5-celled von Neumann neighborhood. A270319

a(n) is the coefficient of xⁿ in x/(1 + ∑_k>=1 (1/2)*(prime(k+1) - 1)*x^k). A74142

Coefficients of expansion of:p(t,y)=-Exp[t/4]/(-2 + y·Exp[t/4] + y·Exp[3·t/4]). A171770

Positive integers which apparently never result in a palindrome under repeated applications of the function A056964(x) = x + (x with digits reversed). A23108