Properties of the Number 1823

One Thousand Eight Hundred Twenty-Three

Basics

Value: 1822 → 1823 → 1824

Parity: odd

Prime: Yes

Previous Prime: 1811

Next Prime: 1831

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

Today's Target

4823 Try Today's Challenge

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: Yes

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

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

Safe primes (A005385) that are not Sophie Germain primes. A59452

Number of partitions of n which represent first player winning Chomp positions with multiple winning moves. A112473

Numbers k such that (9^k + 1)/10 is a prime. A57175

Primes congruent to 31 mod 32. A127578