number.wiki
Number

20,143

20,143 is a prime, odd.

Cousin Prime Deficient Number Prime Sexy Prime Squarefree

Properties

Parity
Odd
Digit count
5
Digit sum
10
Digital root
1
Palindrome
No
Divisor count
2
σ(n) — sum of divisors
20,144

Primality

20,143 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 20143
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 20,143)
1 × 20143
First multiples
20,143 · 40,286 · 60,429 · 80,572 · 100,715 · 120,858 · 141,001 · 161,144 · 181,287 · 201,430

Representations

In words
twenty thousand one hundred forty-three
Ordinal
20143rd
Binary
100111010101111
Octal
47257
Hexadecimal
4EAF

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 20,129 (gap of 14)
  • Next prime: 20,147 (gap of 4)

Pair status: cousin with 20147.

Unicode codepoint
U+4EAF
Other letter (Lo)

UTF-8 encoding: E4 BA AF (3 bytes).

Hex color
#004EAF
RGB(0, 78, 175)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.78.175.