206
206 is a composite number, even, a calendar year.
206 (two hundred six) is an even 3-digit number. It is a composite number with 4 divisors, and factors as 2 × 103. Written other ways, in Roman numerals it is CCVI and in binary, 11001110.
Interestingness
Historical context — 206 AD
Calendar year
Year 206 (CCVI) was a common year starting on Wednesday of the Julian calendar.
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Historical context — 206 BC
Calendar year
Year 206 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, 206
- Ended on
-
Wednesday
December 31, 206
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
200s
200–209
- Century
-
3rd century
201–300
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,820
1820 years before 2026.
In other calendars
- Hebrew
-
3966 / 3967 AM
Rosh Hashanah falls in September/October.
- Chinese
-
Year of the zodiac:Fire zodiac:Dog
Sexagenary cycle position 23 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
749 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Ethiopian
-
198 / 199 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
128 / 127 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 2 × 103
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√206 = [14; (2, 1, 5, 14, 5, 1, 2, 28)]
Period length 8 — the block in parentheses repeats forever.
Representations
- In words
- two hundred six
- Ordinal
- 206th
- Roman numeral
- CCVI
- Binary
- 11001110
- Octal
- 316
- Hexadecimal
- 0xCE
- Base64
- zg==
- One's complement
- 49 (8-bit)
- Scientific notation
- 2.06 × 10²
- As a duration
- 206 s = 3 minutes, 26 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- σϛʹ
- Mayan (base 20)
- 𝋪·𝋦
- Chinese
- 二百零六
- Chinese (financial)
- 貳佰零陸
Digit at this position in famous constants
- π — Pi (π)
- Digit 206 = 8
- e — Euler's number (e)
- Digit 206 = 8
- φ — Golden ratio (φ)
- Digit 206 = 2
- √2 — Pythagoras's (√2)
- Digit 206 = 5
- ln 2 — Natural log of 2
- Digit 206 = 3
- γ — Euler-Mascheroni (γ)
- Digit 206 = 7
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 206, here are decompositions:
- 7 + 199 = 206
- 13 + 193 = 206
- 43 + 163 = 206
- 67 + 139 = 206
- 79 + 127 = 206
- 97 + 109 = 206
- 103 + 103 = 206
UTF-8 encoding: C3 8E (2 bytes).
HTTP 206 Partial Content — Server returned only part of the resource (range request).
2xx class: Success.
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.206.
- Address
- 0.0.0.206
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.0.206
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The number 206 is an active NANP area code (North American Numbering Plan).
- Primary area
- Seattle
- Region
- Washington
- 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, 206 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G♯3 (207.7 Hz, -14¢)
- Scientific pitch (C4 = 256 Hz): G♯3 (203.2 Hz, +24¢)
- Baroque pitch (A4 = 415 Hz): A3 (207.5 Hz, -13¢)
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.