number.wiki
Number

206

206 is a composite number, even, a calendar year.

Arithmetic Number Deficient Number Odious Number Pernicious Number Recamán's Sequence Semiprime Squarefree Year

Historical context — 206 AD

Calendar year

Year 206 (CCVI) was a common year starting on Wednesday of the Julian calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 · English fallback Read the full article on Wikipedia →

Historical context — 206 BC

Calendar year

Year 206 BC was a year of the pre-Julian Roman calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 · English fallback 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, 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

Parity
Even
Digit count
3
Digit sum
8
Digit product
0
Digital root
8
Palindrome
No
Bit width
8 bits
Reversed
602
Recamán's sequence
a(2,620) = 206
Square (n²)
42,436
Cube (n³)
8,741,816
Divisor count
4
σ(n) — sum of divisors
312
φ(n) — Euler's totient
102
Sum of prime factors
105

Primality

Prime factorization: 2 × 103

Nearest primes: 199 (−7) · 211 (+5)

Divisors & multiples

All divisors (4)
1 · 2 · 103 (half) · 206
Aliquot sum (sum of proper divisors): 106
Factor pairs (a × b = 206)
1 × 206
2 × 103
First multiples
206 · 412 (double) · 618 · 824 · 1,030 · 1,236 · 1,442 · 1,648 · 1,854 · 2,060

Sums & aliquot sequence

As consecutive integers: 50 + 51 + 52 + 53
Aliquot sequence: 206 106 56 64 63 41 1 0 — terminates at zero

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)
In other bases
ternary (3) 21122
quaternary (4) 3032
quinary (5) 1311
senary (6) 542
septenary (7) 413
nonary (9) 248
undecimal (11) 178
duodecimal (12) 152
tridecimal (13) 12b
tetradecimal (14) 10a
pentadecimal (15) db

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
In other modern scripts
Eastern Arabic ٢٠٦ Devanagari २०६ Bengali ২০৬ Tamil ௨௦௬ Thai ๒๐๖ Tibetan ༢༠༦ Khmer ២០៦ Lao ໒໐໖ Burmese ၂၀၆

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 decomposition

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
Unicode codepoint
Î
Latin Capital Letter I With Circumflex
U+00CE
Uppercase letter (Lu)

UTF-8 encoding: C3 8E (2 bytes).

HTTP status code

HTTP 206 Partial Content — Server returned only part of the resource (range request).

2xx class: Success.

Hex color
#0000CE
RGB(0, 0, 206)
IPv4 address

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.

NANP area code 206

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.