20,143
20,143 is a prime, odd.
20,143 (twenty thousand one hundred forty-three) is an odd 5-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x4EAF.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 10
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 34,102
- Square (n²)
- 405,740,449
- Cube (n³)
- 8,172,829,864,207
- Divisor count
- 2
- σ(n) — sum of divisors
- 20,144
- φ(n) — Euler's totient
- 20,142
Primality
20,143 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√20,143 = [141; (1, 12, 1, 1, 11, 1, 4, 1, 1, 1, 4, 1, 1, 1, 1, 3, 1, 1, 39, 1, 93, 1, 1, 1, …)]
Representations
- In words
- twenty thousand one hundred forty-three
- Ordinal
- 20143rd
- Binary
- 100111010101111
- Octal
- 47257
- Hexadecimal
- 0x4EAF
- Base64
- Tq8=
- One's complement
- 45,392 (16-bit)
- Scientific notation
- 2.0143 × 10⁴
- As a duration
- 20,143 s = 5 hours, 35 minutes, 43 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺
- Greek (Milesian)
- ͵κρμγʹ
- Mayan (base 20)
- 𝋢·𝋪·𝋧·𝋣
- Chinese
- 二萬零一百四十三
- Chinese (financial)
- 貳萬零壹佰肆拾參
Digit at this position in famous constants
- π — Pi (π)
- Digit 20,143 = 3
- e — Euler's number (e)
- Digit 20,143 = 5
- φ — Golden ratio (φ)
- Digit 20,143 = 4
- √2 — Pythagoras's (√2)
- Digit 20,143 = 0
- ln 2 — Natural log of 2
- Digit 20,143 = 4
- γ — Euler-Mascheroni (γ)
- Digit 20,143 = 4
Also seen as
UTF-8 encoding: E4 BA AF (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.78.175.
- Address
- 0.0.78.175
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.78.175
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 20143 first appears in π at position 13,135 of the decimal expansion (the 13,135ordinal-suffix:th digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.
Related reading
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.