Number

1,203

1,203 is a composite number, odd, a calendar year.

1,203 (one thousand two hundred three) is an odd 4-digit number. It is a composite number with 4 divisors, and factors as 3 × 401. Written other ways, in Roman numerals it is MCCIII and in binary, 10010110011.

Arithmetic Number Cube-Free Deficient Number Evil Number Recamán's Sequence Semiprime Squarefree Year

Interestingness

★ ★ ★ ☆ ☆

5 notable facts · grade C

1,191 1,192 1,193 1,194 1,195 1,196 1,197 1,198 1,199 1,200 1,201 1,202 1,203 1,204 1,205 1,206 1,207 1,208 1,209 1,210 1,211 1,212 1,213 1,214 1,215

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Historical context — 1203 AD

Calendar year

Year 1203 (MCCIII) 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 →

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, 1203
Ended on: Wednesday
December 31, 1203
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 1200s
1200–1209
Century: 13th century
1201–1300
Millennium: 2nd millennium
1001–2000
Years ago: 823
823 years before 2026.

In other calendars

Hebrew: 4963 / 4964 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 599 / 600 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Water zodiac:Pig
Sexagenary cycle position 60 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1746 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 581 / 582 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 1195 / 1196 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 1125 / 1124 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 4
Digit sum: 6
Digit product: 0
Digital root: 6
Palindrome: No
Bit width: 11 bits
Reversed: 3,021
Recamán's sequence: a(8,582) = 1,203
Square (n²): 1,447,209
Cube (n³): 1,740,992,427
Divisor count: 4
σ(n) — sum of divisors: 1,608
φ(n) — Euler's totient: 800
Sum of prime factors: 404

Primality

Prime factorization: 3 × 401

Nearest primes: 1,201 (−2) · 1,213 (+10)

Divisors & multiples

All divisors (4)

1 · 3 · 401 · 1203

Aliquot sum (sum of proper divisors): 405

Factor pairs (a × b = 1,203)

1 × 1203

3 × 401

First multiples

1,203 · 2,406 (double) · 3,609 · 4,812 · 6,015 · 7,218 · 8,421 · 9,624 · 10,827 · 12,030

Sums & aliquot sequence

As consecutive integers: 601 + 602 400 + 401 + 402 198 + 199 + 200 + 201 + 202 + 203

Aliquot sequence: 1,203 → 405 → 321 → 111 → 41 → 1 → 0 — terminates at zero

Continued fraction of √n

√1,203 = [34; (1, 2, 5, 1, 33, 1, 5, 2, 1, 68)]

Period length 10 — the block in parentheses repeats forever.

Representations

In words: one thousand two hundred three
Ordinal: 1203rd
Roman numeral: MCCIII
Binary: 10010110011
Octal: 2263
Hexadecimal: 0x4B3
Base64: BLM=
One's complement: 64,332 (16-bit)
Scientific notation: 1.203 × 10³
As a duration: 1,203 s = 20 minutes, 3 seconds

In other bases

ternary (3) 1122120

quaternary (4) 102303

quinary (5) 14303

senary (6) 5323

septenary (7) 3336

nonary (9) 1576

undecimal (11) 9a4

duodecimal (12) 843

tridecimal (13) 717

tetradecimal (14) 61d

pentadecimal (15) 553

Palindromic in base 13

As an angle

1,203° = 3 × 360° + 123°

123° ≈ 2.147 rad

Compass bearing: ESE (east-southeast)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒌋 𒁹𒁹𒁹
Egyptian hieroglyphic: 𓆼𓍢𓍢𓏺𓏺𓏺
Greek (Milesian): ͵ασγʹ
Mayan (base 20): 𝋣·𝋠·𝋣
Chinese: 一千二百零三
Chinese (financial): 壹仟貳佰零參

In other modern scripts

Eastern Arabic ١٢٠٣ Devanagari १२०३ Bengali ১২০৩ Tamil ௧௨௦௩ Thai ๑๒๐๓ Tibetan ༡༢༠༣ Khmer ១២០៣ Lao ໑໒໐໓ Burmese ၁၂၀၃

Digit at this position in famous constants

π — Pi (π): Digit 1,203 = 5
e — Euler's number (e): Digit 1,203 = 5
φ — Golden ratio (φ): Digit 1,203 = 0
√2 — Pythagoras's (√2): Digit 1,203 = 5
ln 2 — Natural log of 2: Digit 1,203 = 9
γ — Euler-Mascheroni (γ): Digit 1,203 = 5

Also seen as

Unicode codepoint

Cyrillic Small Letter Ha With Descender

U+04B3

Lowercase letter (Ll)

UTF-8 encoding: D2 B3 (2 bytes).

Lookup U+04B3 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0004B3

RGB(0, 4, 179)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.179.

Address: 0.0.4.179
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.4.179

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

Musical pitch

Heard as a frequency, 1,203 Hz is closest to:

Concert pitch (A4 = 440 Hz): D6 (1174.7 Hz, +41¢)
Scientific pitch (C4 = 256 Hz): D♯6 (1217.7 Hz, -21¢)
Baroque pitch (A4 = 415 Hz): D♯6 (1173.8 Hz, +43¢)

Position in π

The digit sequence 1203 first appears in π at position 60,872 of the decimal expansion (the 60,872ordinal-suffix:nd digit after the integer 3).

Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.

Look up 1203 on Pi Search ↗