463
463 is a prime, odd, a calendar year.
463 (four 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 CDLXIII and in binary, 111001111.
Interestingness
Historical context — 463 AD
Calendar year
Year 463 (CDLXIII) was a common year starting on Tuesday of the Julian calendar.
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Historical context — 463 BC
Calendar year
Year 463 BC was a year of the pre-Julian Roman calendar.
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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
-
Monday
January 1, 463
- Ended on
-
Monday
December 31, 463
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Decade
-
460s
460–469
- Century
-
5th century
401–500
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,563
1563 years before 2026.
In other calendars
- Hebrew
-
4223 / 4224 AM
Rosh Hashanah falls in September/October.
- Chinese
-
Year of the zodiac:Water zodiac:Rabbit
Sexagenary cycle position 40 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1006 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Ethiopian
-
455 / 456 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
385 / 384 Saka
Indian national calendar; year starts in March.
Properties
Primality
463 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√463 = [21; (1, 1, 13, 1, 5, 4, 1, 1, 1, 1, 2, 2, 6, 1, 3, 21, 3, 1, 6, 2, 2, 1, 1, 1, …)]
Period length 32 — the block in parentheses repeats forever.
Representations
- In words
- four hundred sixty-three
- Ordinal
- 463rd
- Roman numeral
- CDLXIII
- Binary
- 111001111
- Octal
- 717
- Hexadecimal
- 0x1CF
- Base64
- Ac8=
- One's complement
- 65,072 (16-bit)
- Scientific notation
- 4.63 × 10²
- As a duration
- 463 s = 7 minutes, 43 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺
- Greek (Milesian)
- υξγʹ
- Mayan (base 20)
- 𝋡·𝋣·𝋣
- Chinese
- 四百六十三
- Chinese (financial)
- 肆佰陸拾參
Digit at this position in famous constants
- π — Pi (π)
- Digit 463 = 2
- e — Euler's number (e)
- Digit 463 = 9
- φ — Golden ratio (φ)
- Digit 463 = 7
- √2 — Pythagoras's (√2)
- Digit 463 = 0
- ln 2 — Natural log of 2
- Digit 463 = 4
- γ — Euler-Mascheroni (γ)
- Digit 463 = 7
Also seen as
UTF-8 encoding: C7 8F (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.207.
- Address
- 0.0.1.207
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.1.207
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The number 463 is an active NANP area code (North American Numbering Plan).
- Primary area
- Indianapolis
- Region
- Indiana
- 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, 463 Hz is closest to:
- Concert pitch (A4 = 440 Hz): A♯4 (466.2 Hz, -12¢)
- Scientific pitch (C4 = 256 Hz): A♯4 (456.1 Hz, +26¢)
- Baroque pitch (A4 = 415 Hz): B4 (465.8 Hz, -11¢)
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.