Properties of the Number -7243

Two Hundred Forty-Three

Basics

Value: -7244 → -7243 → -7242

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 7243

Divisors: 1, 7243

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1110001001011

Octal: -16113

Duodecimal: -4237

Hexadecimal: -1c4b

Square: 52461049

Square Root: 85.10581648747635

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

Numerators of coefficients in C(x) where: C(x)^1/2 - S(x)^1/2 = 1 such that C'(x)*S(x)^1/2 = S'(x)*C(x)^1/2 = 2·x*C(x). A299430

Expansion of ψ(x³)³ / (ψ(x)² * ψ(x²)) in powers of·where ψ() is a Ramanujan θ function. A262157

Primes with first digit 7. A45713

Class 5+ primes (for definition see A005105). A81633

Primes of the form abs(8n² - 488n + 7243) in order of increasing nonnegative values of n. A272160

Least prime in A023200 (lesser of 4-twins) such that the distance to the next 4-twin is 6·n. A52351

Primes whose reversal is a multiple of 23. A87767

Natural numbers n that have the property that starting from k = n, the fixed point of the map k -> floor(tan(k)) is strictly positive, while the smallest number encountered during the iteration is strictly negative. A258202

Discriminants of imaginary quadratic fields with class number 13 (negated). A46010

Primes congruent to 28 mod 37. A142137