863
863 is a prime, odd, a calendar year.
Historical context — 863 AD
Calendar year
Year 863 (DCCCLXIII) was a common year starting on Friday of the Julian calendar.
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Historical context — 863 BC
Decade
This article concerns the period 869 BC – 860 BC.
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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, 863
- Ended on
-
Monday
December 31, 863
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Decade
-
860s
860–869
- Century
-
9th century
801–900
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,163
1163 years before 2026.
In other calendars
- Hebrew
-
4623 / 4624 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
248 / 249 AH
Lunar calendar; year spans differ from Gregorian.
- 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
-
1406 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
241 / 242 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
855 / 856 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
785 / 784 Saka
Indian national calendar; year starts in March.
Properties
Primality
863 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- eight hundred sixty-three
- Ordinal
- 863rd
- Roman numeral
- DCCCLXIII
- Binary
- 1101011111
- Octal
- 1537
- Hexadecimal
- 0x35F
- Base64
- A18=
- One's complement
- 64,672 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺
- Greek (Milesian)
- ωξγʹ
- Mayan (base 20)
- 𝋢·𝋣·𝋣
- Chinese
- 八百六十三
- Chinese (financial)
- 捌佰陸拾參
Digit at this position in famous constants
- π — Pi (π)
- Digit 863 = 8
- e — Euler's number (e)
- Digit 863 = 4
- φ — Golden ratio (φ)
- Digit 863 = 7
- √2 — Pythagoras's (√2)
- Digit 863 = 4
- ln 2 — Natural log of 2
- Digit 863 = 4
- γ — Euler-Mascheroni (γ)
- Digit 863 = 7
Also seen as
UTF-8 encoding: CD 9F (2 bytes).
Code page 863 is DOS French Canadian — DOS code page for French Canadian.
Code pages are integer identifiers used by Windows and other systems to refer to specific character encodings.
As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.95.
- Address
- 0.0.3.95
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.3.95
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The number 863 is an active NANP area code (North American Numbering Plan).
- Primary area
- Lakeland / Sebring
- Region
- Florida
- 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.