563
563 is a prime, odd, a calendar year.
563 (five hundred sixty-three) is an odd 3-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in Roman numerals it is DLXIII and in binary, 1000110011.
Interestingness
Historical context — 563 AD
Calendar year
Year 563 (DLXIII) was a common year starting on Monday of the Julian calendar.
Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 Read the full article on Wikipedia →
Notable events — 563 BC
- Undated Traditional birth year of Siddhartha Gautama, the Buddha.
Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0
Year facts
- Year type
-
Common year
Standard 365-day year; not divisible by 4 (or divisible by 100 but not 400).
- Days in year
- 365
- ISO weeks
- 52
- Started on
-
Saturday
January 1, 563
- Ended on
-
Saturday
December 31, 563
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
560s
560–569
- Century
-
6th century
501–600
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,463
1463 years before 2026.
In other calendars
- Hebrew
-
4323 / 4324 AM
Rosh Hashanah falls in September/October.
- Chinese
-
Year of the zodiac:Water zodiac:Goat
Sexagenary cycle position 20 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1106 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Ethiopian
-
555 / 556 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
485 / 484 Saka
Indian national calendar; year starts in March.
Properties
Primality
563 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√563 = [23; (1, 2, 1, 2, 23, 2, 1, 2, 1, 46)]
Period length 10 — the block in parentheses repeats forever.
Representations
- In words
- five hundred sixty-three
- Ordinal
- 563rd
- Roman numeral
- DLXIII
- Binary
- 1000110011
- Octal
- 1063
- Hexadecimal
- 0x233
- Base64
- AjM=
- One's complement
- 64,972 (16-bit)
- Scientific notation
- 5.63 × 10²
- As a duration
- 563 s = 9 minutes, 23 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺
- Greek (Milesian)
- φξγʹ
- Mayan (base 20)
- 𝋡·𝋨·𝋣
- Chinese
- 五百六十三
- Chinese (financial)
- 伍佰陸拾參
Digit at this position in famous constants
- π — Pi (π)
- Digit 563 = 5
- e — Euler's number (e)
- Digit 563 = 4
- φ — Golden ratio (φ)
- Digit 563 = 1
- √2 — Pythagoras's (√2)
- Digit 563 = 4
- ln 2 — Natural log of 2
- Digit 563 = 3
- γ — Euler-Mascheroni (γ)
- Digit 563 = 0
Also seen as
UTF-8 encoding: C8 B3 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.51.
- Address
- 0.0.2.51
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.2.51
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The number 563 is an active NANP area code (North American Numbering Plan).
- Primary area
- Davenport / Dubuque
- Region
- Iowa
- Country
- United States
Most NANP area codes have multiple overlays in dense regions; the primary area listed is the historic/largest population center for this code.
Heard as a frequency, 563 Hz is closest to:
- Concert pitch (A4 = 440 Hz): C♯5 (554.4 Hz, +27¢)
- Scientific pitch (C4 = 256 Hz): D5 (574.7 Hz, -36¢)
- Baroque pitch (A4 = 415 Hz): D5 (554 Hz, +28¢)
Related reading
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.