Properties of the Number 23291

Twenty-Three Thousand Two Hundred Ninety-One

Basics

Value: 23290 → 23291 → 23292

Parity: odd

Prime: Yes

Previous Prime: 23279

Next Prime: 23293

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 23291

Divisors: 1, 23291

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 101101011111011

Octal: 55373

Duodecimal: 1158B

Hexadecimal: 5afb

Square: 542470681

Square Root: 152.61389189716644

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

Primes p for which exactly four bases b with 1 < b < p exist such that p is a base b Wieferich prime. A255207

a(1)=1, a(2)=2; for n >= 2, a(n+1) = a(n) + sum of prime factors of a(n). A96461

a(n) = A273059(4n). A275916

G.f. A(x) satisfies A(x) = 1/((1 - x) * (1 - x·A(x) - x⁶*A'''''(x))). A385761

Primes p2 such that p1² + p2³ is an average of twin primes and p1 < p2 are consecutive primes. A138716

a(n) is the sum of the prime factors (with repetition) of the sum of the preceding terms; a(1)=a(2)=1. A268868

a(n) = (n³ + 9·n + 14·n + 9)/3. A322595

Primes that remain prime through 3 iterations of function f(x) = 9x + 4. A23297

Records in A268868. A271927

a(n+1) is the sum of a(n) and the prime factors of a(n), counted with multiplicity. Start with a(0) = 3. A192896