Number
1,923
1,923 is a composite number, odd, a calendar year.
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
Aliquot sum (sum of proper divisors):
645
First multiples
Sums & aliquot sequence
As consecutive integers:
961 + 962
640 + 641 + 642
318 + 319 + 320 + 321 + 322 + 323
Aliquot sequence:
1,923 → 645 → 411 → 141 → 51 → 21 → 11 → 1 → 0
— terminates at zero
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)
In other bases
ternary (3)
2122020
quaternary (4)
132003
quinary (5)
30143
senary (6)
12523
septenary (7)
5415
nonary (9)
2566
undecimal (11)
1499
duodecimal (12)
1143
tridecimal (13)
b4c
tetradecimal (14)
9b5
pentadecimal (15)
883
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
In other modern scripts
Eastern Arabic
١٩٢٣
Devanagari
१९२३
Bengali
১৯২৩
Tamil
௧௯௨௩
Thai
๑๙๒๓
Tibetan
༡༩༢༣
Khmer
១៩២៣
Lao
໑໙໒໓
Burmese
၁၉၂၃
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
Unicode codepoint
ރ
Thaana Letter Raa
U+0783
Other letter (Lo)
UTF-8 encoding: DE 83 (2 bytes).
Hex color
#000783
RGB(0, 7, 131)
IPv4 address
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.
Position in π
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.