1,903
1,903 is a composite number, odd, a calendar year.
1,903 (one thousand nine hundred three) is an odd 4-digit number. It is a composite number with 4 divisors, and factors as 11 × 173. Written other ways, in Roman numerals it is MCMIII and in binary, 11101101111.
Interestingness
Notable events — 1903 AD
- Jun 16 Henry Ford incorporates the Ford Motor Company.
- Aug 1 The first transatlantic radio message is sent by Marconi.
- Oct 1 The first World Series is played, won by the Boston Americans.
- Nov 3 Panama declares independence from Colombia with US backing.
- Dec 17 The Wright Brothers make the first powered, heavier-than-air flight at Kitty Hawk.
Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0
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
-
53
Long year: contains 53 ISO weeks.
- Started on
-
Thursday
January 1, 1903
- Ended on
-
Thursday
December 31, 1903
- Friday the 13ths
-
3
3 Friday the 13ths this year.
- Easter Sunday
-
April 12
Sunday, April 12, 1903
- Decade
-
1900s
1900–1909
- Century
-
20th century
1901–2000
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
123
123 years before 2026.
In other calendars
- Hebrew
-
5663 / 5664 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1320 / 1321 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Water zodiac:Rabbit
Sexagenary cycle position 40 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2446 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1281 / 1282 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1895 / 1896 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1825 / 1824 Saka
Indian national calendar; year starts in March.
- Japanese
-
Meiji 36
Reign-era counting from the start of each emperor's reign.
Properties
Primality
Prime factorization: 11 × 173
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√1,903 = [43; (1, 1, 1, 1, 1, 9, 14, 2, 3, 2, 14, 9, 1, 1, 1, 1, 1, 86)]
Period length 18 — the block in parentheses repeats forever.
Representations
- In words
- one thousand nine hundred three
- Ordinal
- 1903rd
- Roman numeral
- MCMIII
- Binary
- 11101101111
- Octal
- 3557
- Hexadecimal
- 0x76F
- Base64
- B28=
- One's complement
- 63,632 (16-bit)
- Scientific notation
- 1.903 × 10³
- As a duration
- 1,903 s = 31 minutes, 43 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓏺𓏺𓏺
- Greek (Milesian)
- ͵αϡγʹ
- Mayan (base 20)
- 𝋤·𝋯·𝋣
- Chinese
- 一千九百零三
- Chinese (financial)
- 壹仟玖佰零參
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,903 = 6
- e — Euler's number (e)
- Digit 1,903 = 0
- φ — Golden ratio (φ)
- Digit 1,903 = 0
- √2 — Pythagoras's (√2)
- Digit 1,903 = 5
- ln 2 — Natural log of 2
- Digit 1,903 = 3
- γ — Euler-Mascheroni (γ)
- Digit 1,903 = 4
Also seen as
UTF-8 encoding: DD AF (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.111.
- Address
- 0.0.7.111
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.7.111
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 1,903 Hz is closest to:
- Concert pitch (A4 = 440 Hz): A♯6 (1864.7 Hz, +35¢)
- Scientific pitch (C4 = 256 Hz): B6 (1933.1 Hz, -27¢)
- Baroque pitch (A4 = 415 Hz): B6 (1863.3 Hz, +37¢)
The digit sequence 1903 first appears in π at position 15,576 of the decimal expansion (the 15,576ordinal-suffix:th 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.
Related reading
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.