Number

297

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

Arithmetic Number Decagonal Deficient Number Evil Number Gapful Number Kaprekar Number Recamán's Sequence Year

Historical context — 297 AD

Calendar year

Year 297 (CCXCVII) was a common year starting on Friday of the Julian calendar.

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Historical context — 297 BC

Calendar year

The year 297 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: Friday
January 1, 297
Ended on: Friday
December 31, 297
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 290s
290–299
Century: 3rd century
201–300
Millennium: 1st millennium
1–1000
Years ago: 1,729
1729 years before 2026.

In other calendars

Hebrew: 4057 / 4058 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Fire zodiac:Snake
Sexagenary cycle position 54 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 840 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 289 / 290 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 219 / 218 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 18
Digit product: 126
Digital root: 9
Palindrome: No
Bit width: 9 bits
Reversed: 792
Recamán's sequence: a(654) = 297
Square (n²): 88,209
Cube (n³): 26,198,073
Divisor count: 8
σ(n) — sum of divisors: 480
φ(n) — Euler's totient: 180
Sum of prime factors: 20

Primality

Prime factorization: 3 ³ × 11

Nearest primes: 293 (−4) · 307 (+10)

Divisors & multiples

All divisors (8)

1 · 3 · 9 · 11 · 27 · 33 · 99 · 297

Aliquot sum (sum of proper divisors): 183

Factor pairs (a × b = 297)

1 × 297

3 × 99

9 × 33

11 × 27

First multiples

297 · 594 (double) · 891 · 1,188 · 1,485 · 1,782 · 2,079 · 2,376 · 2,673 · 2,970

Sums & aliquot sequence

As consecutive integers: 148 + 149 98 + 99 + 100 47 + 48 + 49 + 50 + 51 + 52 29 + 30 + … + 37

Aliquot sequence: 297 → 183 → 65 → 19 → 1 → 0 — terminates at zero

Representations

In words: two hundred ninety-seven
Ordinal: 297th
Roman numeral: CCXCVII
Binary: 100101001
Octal: 451
Hexadecimal: 0x129
Base64: ASk=
One's complement: 65,238 (16-bit)

In other bases

ternary (3) 102000

quaternary (4) 10221

quinary (5) 2142

senary (6) 1213

septenary (7) 603

nonary (9) 360

undecimal (11) 250

duodecimal (12) 209

tridecimal (13) 19b

tetradecimal (14) 173

pentadecimal (15) 14c

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): σϟζʹ
Mayan (base 20): 𝋮·𝋱
Chinese: 二百九十七
Chinese (financial): 貳佰玖拾柒

In other modern scripts

Eastern Arabic ٢٩٧ Devanagari २९७ Bengali ২৯৭ Tamil ௨௯௭ Thai ๒๙๗ Tibetan ༢༩༧ Khmer ២៩៧ Lao ໒໙໗ Burmese ၂၉၇

Digit at this position in famous constants

π — Pi (π): Digit 297 = 4
e — Euler's number (e): Digit 297 = 9
φ — Golden ratio (φ): Digit 297 = 9
√2 — Pythagoras's (√2): Digit 297 = 0
ln 2 — Natural log of 2: Digit 297 = 4
γ — Euler-Mascheroni (γ): Digit 297 = 2

Also seen as

Unicode codepoint

Latin Small Letter I With Tilde

U+0129

Lowercase letter (Ll)

UTF-8 encoding: C4 A9 (2 bytes).

Lookup U+0129 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000129

RGB(0, 1, 41)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.41.

Address: 0.0.1.41
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.1.41

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