Number

271

271 is a prime, odd, a calendar year.

Arithmetic Number Deficient Number Odious Number Pernicious Number Prime Recamán's Sequence Sexy Prime Squarefree Twin Prime Year

Historical context — 271 AD

Calendar year

Year 271 (CCLXXI) was a common year starting on Sunday of the Julian calendar.

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Historical context — 271 BC

Calendar year

Year 271 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: Sunday
January 1, 271
Ended on: Sunday
December 31, 271
Friday the 13ths: 2
2 Friday the 13ths this year.
Decade: 270s
270–279
Century: 3rd century
201–300
Millennium: 1st millennium
1–1000
Years ago: 1,755
1755 years before 2026.

In other calendars

Hebrew: 4031 / 4032 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Metal zodiac:Rabbit
Sexagenary cycle position 28 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 814 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 263 / 264 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 193 / 192 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 10
Digit product: 14
Digital root: 1
Palindrome: No
Bit width: 9 bits
Reversed: 172
Recamán's sequence: a(141) = 271
Square (n²): 73,441
Cube (n³): 19,902,511
Divisor count: 2
σ(n) — sum of divisors: 272
φ(n) — Euler's totient: 270

Primality

271 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)

1 · 271

Aliquot sum (sum of proper divisors): 1

Factor pairs (a × b = 271)

1 × 271

First multiples

271 · 542 (double) · 813 · 1,084 · 1,355 · 1,626 · 1,897 · 2,168 · 2,439 · 2,710

Sums & aliquot sequence

As consecutive integers: 135 + 136

Representations

In words: two hundred seventy-one
Ordinal: 271st
Roman numeral: CCLXXI
Binary: 100001111
Octal: 417
Hexadecimal: 0x10F
Base64: AQ8=
One's complement: 65,264 (16-bit)

In other bases

ternary (3) 101001

quaternary (4) 10033

quinary (5) 2041

senary (6) 1131

septenary (7) 535

nonary (9) 331

undecimal (11) 227

duodecimal (12) 1a7

tridecimal (13) 17b

tetradecimal (14) 155

pentadecimal (15) 131

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹
Egyptian hieroglyphic: 𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺
Greek (Milesian): σοαʹ
Mayan (base 20): 𝋭·𝋫
Chinese: 二百七十一
Chinese (financial): 貳佰柒拾壹

In other modern scripts

Eastern Arabic ٢٧١ Devanagari २७१ Bengali ২৭১ Tamil ௨௭௧ Thai ๒๗๑ Tibetan ༢༧༡ Khmer ២៧១ Lao ໒໗໑ Burmese ၂၇၁

Digit at this position in famous constants

π — Pi (π): Digit 271 = 0
e — Euler's number (e): Digit 271 = 3
φ — Golden ratio (φ): Digit 271 = 0
√2 — Pythagoras's (√2): Digit 271 = 4
ln 2 — Natural log of 2: Digit 271 = 6
γ — Euler-Mascheroni (γ): Digit 271 = 9

Also seen as

Prime neighborhood

Adjacent primes:

Previous prime: 269 (gap of 2)
Next prime: 277 (gap of 6)

Pair status: twin with 269, sexy with 277.

Unicode codepoint

Latin Small Letter D With Caron

U+010F

Lowercase letter (Ll)

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

Lookup U+010F on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#00010F

RGB(0, 1, 15)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.15.

Address: 0.0.1.15
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.1.15

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