Properties of the Number 23143

Twenty-Three Thousand One Hundred Forty-Three

Basics

Value: 23142 → 23143 → 23144

Parity: odd

Prime: Yes

Previous Prime: 23131

Next Prime: 23159

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 23143

Divisors: 1, 23143

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101101001100111

Octal: 55147

Duodecimal: 11487

Hexadecimal: 5a67

Square: 535598449

Square Root: 152.1282353805499

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

Prime time primes (of the form HMMSS with primes H < 24 and MM, SS < 60) such that the corresponding number of seconds after midnight is also prime. A295000

Ulam's spiral (WNW spoke). A143859

Primes p with f(p), f(f(p)) and f(f(f(p))) all prime, where f(n) = prime(n) - n + 1. A235934

Coefficient of·in the reduction by x² -> x+1 of the polynomial p(n,x) defined at Comments. A192965

Primes that are sum of both three and five consecutive primes. A211170

a(n) = 12·n² - 2·n - 1. A185918

Primes of the form T(n) + S(n) + C(n) + 1 where T(n), S(n) and C(n) are the n-th triangular, square and cube numbers. A228908

Number of compositions of n with exactly six occurrences of the largest part. A243741

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 74 ones. A31842

Primes whose indices are the sum of the first n+1 Fibonacci numbers. A105554