1,923
1,923 is a composite number, odd, a calendar year.
1,923 (one thousand nine hundred twenty-three) is an odd 4-digit number. It is a composite number with 4 divisors, and factors as 3 × 641. Written other ways, in Roman numerals it is MCMXXIII and in binary, 11110000011.
Interestingness
Notable events — 1923 AD
- Sep 1 The Great Kantō earthquake devastates Tokyo and Yokohama, killing over 100,000.
- Sep 13 Spain's General Primo de Rivera establishes a dictatorship.
- Oct 29 The Republic of Turkey is proclaimed with Mustafa Kemal Atatürk as president.
- Nov 8 Hitler attempts the Beer Hall Putsch in Munich.
- Nov 15 Germany introduces the Rentenmark, ending hyperinflation.
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
- 52
- Started on
-
Monday
January 1, 1923
- Ended on
-
Monday
December 31, 1923
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Easter Sunday
-
April 1
Sunday, April 1, 1923
- Decade
-
1920s
1920–1929
- Century
-
20th century
1901–2000
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
103
103 years before 2026.
In other calendars
- Hebrew
-
5683 / 5684 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1341 / 1342 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
-
2466 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1301 / 1302 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1915 / 1916 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1845 / 1844 Saka
Indian national calendar; year starts in March.
- Japanese
-
Taishō 12
Reign-era counting from the start of each emperor's reign.
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 15
- Digit product
- 54
- Digital root
- 6
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 3,291
- Recamán's sequence
- a(7,898) = 1,923
- Square (n²)
- 3,697,929
- Cube (n³)
- 7,111,117,467
- Divisor count
- 4
- σ(n) — sum of divisors
- 2,568
- φ(n) — Euler's totient
- 1,280
- Sum of prime factors
- 644
Primality
Prime factorization: 3 × 641
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√1,923 = [43; (1, 5, 1, 3, 7, 1, 2, 2, 43, 2, 2, 1, 7, 3, 1, 5, 1, 86)]
Period length 18 — the block in parentheses repeats forever.
Representations
- In words
- one thousand nine hundred twenty-three
- Ordinal
- 1923rd
- Roman numeral
- MCMXXIII
- Binary
- 11110000011
- Octal
- 3603
- Hexadecimal
- 0x783
- Base64
- B4M=
- One's complement
- 63,612 (16-bit)
- Scientific notation
- 1.923 × 10³
- As a duration
- 1,923 s = 32 minutes, 3 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹 𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺
- Greek (Milesian)
- ͵αϡκγʹ
- Mayan (base 20)
- 𝋤·𝋰·𝋣
- Chinese
- 一千九百二十三
- Chinese (financial)
- 壹仟玖佰貳拾參
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,923 = 4
- e — Euler's number (e)
- Digit 1,923 = 2
- φ — Golden ratio (φ)
- Digit 1,923 = 6
- √2 — Pythagoras's (√2)
- Digit 1,923 = 9
- ln 2 — Natural log of 2
- Digit 1,923 = 7
- γ — Euler-Mascheroni (γ)
- Digit 1,923 = 2
Also seen as
UTF-8 encoding: DE 83 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.131.
- Address
- 0.0.7.131
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.7.131
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 1,923 Hz is closest to:
- Concert pitch (A4 = 440 Hz): B6 (1975.5 Hz, -47¢ — about midway to A♯6)
- Scientific pitch (C4 = 256 Hz): B6 (1933.1 Hz, -9¢)
- Baroque pitch (A4 = 415 Hz): C7 (1974.1 Hz, -45¢ — about midway to B6)
The digit sequence 1923 first appears in π at position 23,097 of the decimal expansion (the 23,097ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.