Number

273

273 is a composite number, odd, a calendar year.

273 (two hundred seventy-three) is an odd 3-digit number. It is a composite number with 8 divisors, and factors as 3 × 7 × 13. Written other ways, in Roman numerals it is CCLXXIII and in binary, 100010001.

Arithmetic Number Binary Palindrome Cube-Free Deficient Number Odious Number Pernicious Number Recamán's Sequence Sphenic Number Squarefree Year

Interestingness

★ ★ ★ ★ ☆

6 notable facts · grade B

261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285

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Historical context — 273 AD

Calendar year

Year 273 (CCLXXIII) was a common year starting on Wednesday of the Julian calendar.

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

Historical context — 273 BC

Calendar year

Year 273 BC was a year of the pre-Julian Roman calendar.

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, 273
Ended on: Wednesday
December 31, 273
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 270s
270–279
Century: 3rd century
201–300
Millennium: 1st millennium
1–1000
Years ago: 1,753
1753 years before 2026.

In other calendars

Hebrew: 4033 / 4034 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Water zodiac:Snake
Sexagenary cycle position 30 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 816 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 265 / 266 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 195 / 194 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 12
Digit product: 42
Digital root: 3
Palindrome: No
Bit width: 9 bits
Reversed: 372
Recamán's sequence: a(145) = 273
Square (n²): 74,529
Cube (n³): 20,346,417
Divisor count: 8
σ(n) — sum of divisors: 448
φ(n) — Euler's totient: 144
Sum of prime factors: 23

Primality

Prime factorization: 3 × 7 × 13

Nearest primes: 271 (−2) · 277 (+4)

Divisors & multiples

All divisors (8)

1 · 3 · 7 · 13 · 21 · 39 · 91 · 273

Aliquot sum (sum of proper divisors): 175

Factor pairs (a × b = 273)

1 × 273

3 × 91

7 × 39

13 × 21

First multiples

273 · 546 (double) · 819 · 1,092 · 1,365 · 1,638 · 1,911 · 2,184 · 2,457 · 2,730

Sums & aliquot sequence

As consecutive integers: 136 + 137 90 + 91 + 92 43 + 44 + 45 + 46 + 47 + 48 36 + 37 + … + 42

Aliquot sequence: 273 → 175 → 73 → 1 → 0 — terminates at zero

Continued fraction of √n

√273 = [16; (1, 1, 10, 1, 1, 32)]

Period length 6 — the block in parentheses repeats forever.

Representations

In words: two hundred seventy-three
Ordinal: 273rd
Roman numeral: CCLXXIII
Binary: 100010001
Octal: 421
Hexadecimal: 0x111
Base64: ARE=
One's complement: 65,262 (16-bit)
Scientific notation: 2.73 × 10²
As a duration: 273 s = 4 minutes, 33 seconds

In other bases

ternary (3) 101010

quaternary (4) 10101

quinary (5) 2043

senary (6) 1133

septenary (7) 540

nonary (9) 333

undecimal (11) 229

duodecimal (12) 1a9

tridecimal (13) 180

tetradecimal (14) 157

pentadecimal (15) 133

Palindromic in base 2, base 4, base 9, base 16

As an angle

273°

273° ≈ 4.765 rad

Compass bearing: W (west)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺
Greek (Milesian): σογʹ
Mayan (base 20): 𝋭·𝋭
Chinese: 二百七十三
Chinese (financial): 貳佰柒拾參

In other modern scripts

Eastern Arabic ٢٧٣ Devanagari २७३ Bengali ২৭৩ Tamil ௨௭௩ Thai ๒๗๓ Tibetan ༢༧༣ Khmer ២៧៣ Lao ໒໗໓ Burmese ၂၇၃

Digit at this position in famous constants

π — Pi (π): Digit 273 = 5
e — Euler's number (e): Digit 273 = 4
φ — Golden ratio (φ): Digit 273 = 4
√2 — Pythagoras's (√2): Digit 273 = 2
ln 2 — Natural log of 2: Digit 273 = 6
γ — Euler-Mascheroni (γ): Digit 273 = 2

Also seen as

Unicode codepoint

Latin Small Letter D With Stroke

U+0111

Lowercase letter (Ll)

UTF-8 encoding: C4 91 (2 bytes).

Lookup U+0111 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000111

RGB(0, 1, 17)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.17.

Address: 0.0.1.17
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.1.17

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Musical pitch

Heard as a frequency, 273 Hz is closest to:

Concert pitch (A4 = 440 Hz): C♯4 (277.2 Hz, -26¢)
Scientific pitch (C4 = 256 Hz): C♯4 (271.2 Hz, +11¢)
Baroque pitch (A4 = 415 Hz): D4 (277 Hz, -25¢)

Temperature

273 K is essentially the freezing point of water (0 °C = 273.15 K).