Properties of the Number -1823

Eight Hundred Twenty-Three

Basics

Value: -1824 → -1823 → -1822

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 1823

Divisors: 1, 1823

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11100011111

Octal: -3437

Duodecimal: -107B

Hexadecimal: -71f

Square: 3323329

Square Root: 42.69660408041839

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

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 97", based on the 5-celled von Neumann neighborhood. A270155

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 371", based on the 5-celled von Neumann neighborhood. A271457

Expansion of log(1+sinh(tanh(x))). A9349

arctan(sin(tan(x)))=x-1/3!*x³+1/5!*x⁵-169/7!*x⁷-1823/9!*x⁹... A12014

Safe primes p: (p-1)/2 is also prime. A5385

Primes of form n² + n + 17. A7635

Primes prime(k) for which A049076(k) = 2. A49078

Numbers k such that (4^k + 5^k)/9 is prime. A128335

Lower prime of a difference of 8 between consecutive primes. A31926

Primes of the form 16n+15. A127576