Properties of the Number 1993

One Thousand Nine Hundred Ninety-Three

Basics

Value: 1992 → 1993 → 1994

Parity: odd

Prime: Yes

Previous Prime: 1987

Next Prime: 1997

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 1993

Divisors: 1, 1993

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 11111001001

Octal: 3711

Duodecimal: 11A1

Hexadecimal: 7c9

Square: 3972049

Square Root: 44.64302857109943

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

Numbers k such that 4^k - 3^k is prime. A59801

Primes p such that (p+1)/2 is prime. A5383

Number of partitions of n into parts having a common factor. A18783

Initial members of prime triples (p, p+4, p+6). A22005

Primes of the form x²+Ny², with N=102. A139643

Prime triples: p; p+2 or p+4; p+6 all prime. A7529

Primes that are the sum of three consecutive primes. A34962

Primes of the form x² + 24·y². A107008

Number of partitions of n such that each pair of parts (if any) has a common factor. A200976

Number of partitions of n into a prime number of parts. A38499