719
719 is a prime, odd, a calendar year.
719 (seven hundred nineteen) 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 DCCXIX and in binary, 1011001111.
Interestingness
Historical context — 719 AD
Calendar year
Year 719 (DCCXIX) was a common year starting on Sunday of the Julian calendar, the 719th year of the Common Era (CE) and Anno Domini (AD) designations, the 719th year of the 1st millennium, the 19th year of the 8th century, and the 10th and last year of the 710s decade.
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Historical context — 719 BC
Decade
This article concerns the period 719 BC – 710 BC.
Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 Read the full article on Wikipedia →
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, 719
- Ended on
-
Wednesday
December 31, 719
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
710s
710–719
- Century
-
8th century
701–800
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,307
1307 years before 2026.
In other calendars
- Hebrew
-
4479 / 4480 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
100 / 101 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Goat
Sexagenary cycle position 56 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1262 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
97 / 98 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
711 / 712 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
641 / 640 Saka
Indian national calendar; year starts in March.
Properties
Primality
719 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√719 = [26; (1, 4, 2, 1, 1, 1, 1, 1, 4, 3, 1, 9, 1, 25, 1, 9, 1, 3, 4, 1, 1, 1, 1, 1, …)]
Period length 28 — the block in parentheses repeats forever.
Representations
- In words
- seven hundred nineteen
- Ordinal
- 719th
- Roman numeral
- DCCXIX
- Binary
- 1011001111
- Octal
- 1317
- Hexadecimal
- 0x2CF
- Base64
- As8=
- One's complement
- 64,816 (16-bit)
- Scientific notation
- 7.19 × 10²
- As a duration
- 719 s = 11 minutes, 59 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ψιθʹ
- Mayan (base 20)
- 𝋡·𝋯·𝋳
- Chinese
- 七百一十九
- Chinese (financial)
- 柒佰壹拾玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 719 = 9
- e — Euler's number (e)
- Digit 719 = 3
- φ — Golden ratio (φ)
- Digit 719 = 9
- √2 — Pythagoras's (√2)
- Digit 719 = 5
- ln 2 — Natural log of 2
- Digit 719 = 4
- γ — Euler-Mascheroni (γ)
- Digit 719 = 7
Also seen as
UTF-8 encoding: CB 8F (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.207.
- Address
- 0.0.2.207
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.2.207
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The number 719 is an active NANP area code (North American Numbering Plan).
- Primary area
- Colorado Springs / Pueblo
- Region
- Colorado
- 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, 719 Hz is closest to:
- Concert pitch (A4 = 440 Hz): F♯5 (740 Hz, -50¢ — about midway to F5)
- Scientific pitch (C4 = 256 Hz): F♯5 (724.1 Hz, -12¢)
- Baroque pitch (A4 = 415 Hz): G5 (739.4 Hz, -49¢ — about midway to F♯5)
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.