319
319 is a composite number, odd, a calendar year.
319 (three hundred nineteen) is an odd 3-digit number. It is a composite number with 4 divisors, and factors as 11 × 29. Written other ways, in Roman numerals it is CCCXIX and in binary, 100111111.
Interestingness
Historical context — 319 AD
Calendar year
Year 319 (CCCXIX) was a common year starting on Thursday of the Julian calendar.
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Historical context — 319 BC
Calendar year
Year 319 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
-
Wednesday
January 1, 319
- Ended on
-
Wednesday
December 31, 319
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
310s
310–319
- Century
-
4th century
301–400
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,707
1707 years before 2026.
In other calendars
- Hebrew
-
4079 / 4080 AM
Rosh Hashanah falls in September/October.
- Chinese
-
Year of the zodiac:Earth zodiac:Rabbit
Sexagenary cycle position 16 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
862 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Ethiopian
-
311 / 312 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
241 / 240 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 11 × 29
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√319 = [17; (1, 6, 5, 1, 4, 3, 1, 3, 4, 1, 5, 6, 1, 34)]
Period length 14 — the block in parentheses repeats forever.
Representations
- In words
- three hundred nineteen
- Ordinal
- 319th
- Roman numeral
- CCCXIX
- Binary
- 100111111
- Octal
- 477
- Hexadecimal
- 0x13F
- Base64
- AT8=
- One's complement
- 65,216 (16-bit)
- Scientific notation
- 3.19 × 10²
- As a duration
- 319 s = 5 minutes, 19 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓍢𓍢𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- τιθʹ
- Mayan (base 20)
- 𝋯·𝋳
- Chinese
- 三百一十九
- Chinese (financial)
- 參佰壹拾玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 319 = 8
- e — Euler's number (e)
- Digit 319 = 1
- φ — Golden ratio (φ)
- Digit 319 = 1
- √2 — Pythagoras's (√2)
- Digit 319 = 8
- ln 2 — Natural log of 2
- Digit 319 = 0
- γ — Euler-Mascheroni (γ)
- Digit 319 = 9
Also seen as
UTF-8 encoding: C4 BF (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.63.
- Address
- 0.0.1.63
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.1.63
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The number 319 is an active NANP area code (North American Numbering Plan).
- Primary area
- Cedar Rapids / Iowa City
- 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, 319 Hz is closest to:
- Concert pitch (A4 = 440 Hz): D♯4 (311.1 Hz, +43¢)
- Scientific pitch (C4 = 256 Hz): E4 (322.5 Hz, -19¢)
- Baroque pitch (A4 = 415 Hz): E4 (310.9 Hz, +45¢ — about midway to F4)
Related reading
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.