808
808 is a composite number, even, a calendar year.
Historical context — 808 AD
Calendar year
Year 808 (DCCCVIII) was a leap year starting on Saturday of the Julian calendar, the 808th year of the Common Era (CE) and Anno Domini (AD) designations, the 808th year of the 1st millennium, the 8th year of the 9th century, and the 9th year of the 800s decade.
Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 · English fallback Read the full article on Wikipedia →
Historical context — 808 BC
Decade
This article concerns the period 809 BC – 800 BC.
Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 · English fallback Read the full article on Wikipedia →
Year facts
- Year type
-
Leap year
Divisible by 4 and not by 100; February has 29 days.
- Days in year
- 366
- ISO weeks
- 52
- Started on
-
Tuesday
January 1, 808
- Ended on
-
Wednesday
December 31, 808
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
800s
800–809
- Century
-
9th century
801–900
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,218
1218 years before 2026.
In other calendars
- Hebrew
-
4568 / 4569 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
192 / 193 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Rat
Sexagenary cycle position 25 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1351 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
186 / 187 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
800 / 801 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
730 / 729 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 2 3 × 101
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- eight hundred eight
- Ordinal
- 808th
- Roman numeral
- DCCCVIII
- Binary
- 1100101000
- Octal
- 1450
- Hexadecimal
- 0x328
- Base64
- Ayg=
- One's complement
- 64,727 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ωηʹ
- Mayan (base 20)
- 𝋢·𝋠·𝋨
- Chinese
- 八百零八
- Chinese (financial)
- 捌佰零捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 808 = 9
- e — Euler's number (e)
- Digit 808 = 0
- φ — Golden ratio (φ)
- Digit 808 = 5
- √2 — Pythagoras's (√2)
- Digit 808 = 5
- ln 2 — Natural log of 2
- Digit 808 = 9
- γ — Euler-Mascheroni (γ)
- Digit 808 = 0
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 808, here are decompositions:
- 11 + 797 = 808
- 47 + 761 = 808
- 89 + 719 = 808
- 107 + 701 = 808
- 131 + 677 = 808
- 149 + 659 = 808
- 167 + 641 = 808
- 191 + 617 = 808
Showing the first eight; more decompositions exist.
UTF-8 encoding: CC A8 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.40.
- Address
- 0.0.3.40
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.3.40
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The number 808 is an active NANP area code (North American Numbering Plan).
- Primary area
- Statewide
- Region
- Hawaii
- 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.
Type 808 on a seven-segment calculator, flip it 180°, and the display reads:
BOB
A staple of calculator humor since pocket calculators put digits in front of bored students.