Number

1,943

1,943 is a composite number, odd, a calendar year.

Arithmetic Number Deficient Number Evil Number Recamán's Sequence Semiprime Squarefree Year

Notable events — 1943 AD

Feb 2 German forces surrender at Stalingrad in a turning point of WWII.
Apr 19 The Warsaw Ghetto Uprising begins.
Jul 9 Allied forces invade Sicily.
Jul 25 Mussolini is arrested in Rome; Italy joins the Allies in September.
Nov 28 Roosevelt, Stalin, and Churchill meet at the Tehran Conference.

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: Friday
January 1, 1943
Ended on: Friday
December 31, 1943
Friday the 13ths: 1
One Friday the 13th this year.
Easter Sunday: April 25
Sunday, April 25, 1943
Decade: 1940s
1940–1949
Century: 20th century
1901–2000
Millennium: 2nd millennium
1001–2000
Years ago: 83
83 years before 2026.

In other calendars

Hebrew: 5703 / 5704 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 1361 / 1363 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Water zodiac:Goat
Sexagenary cycle position 20 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 2486 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 1321 / 1322 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 1935 / 1936 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 1865 / 1864 Saka
Indian national calendar; year starts in March.
Japanese: Shōwa 18
Reign-era counting from the start of each emperor's reign.

Properties

Parity: Odd
Digit count: 4
Digit sum: 17
Digit product: 108
Digital root: 8
Palindrome: No
Bit width: 11 bits
Reversed: 3,491
Recamán's sequence: a(3,865) = 1,943
Square (n²): 3,775,249
Cube (n³): 7,335,308,807
Divisor count: 4
σ(n) — sum of divisors: 2,040
φ(n) — Euler's totient: 1,848
Sum of prime factors: 96

Primality

Prime factorization: 29 × 67

Nearest primes: 1,933 (−10) · 1,949 (+6)

Divisors & multiples

All divisors (4)

1 · 29 · 67 · 1943

Aliquot sum (sum of proper divisors): 97

Factor pairs (a × b = 1,943)

1 × 1943

29 × 67

First multiples

1,943 · 3,886 (double) · 5,829 · 7,772 · 9,715 · 11,658 · 13,601 · 15,544 · 17,487 · 19,430

Sums & aliquot sequence

As consecutive integers: 971 + 972 53 + 54 + … + 81 5 + 6 + … + 62

Aliquot sequence: 1,943 → 97 → 1 → 0 — terminates at zero

Representations

In words: one thousand nine hundred forty-three
Ordinal: 1943rd
Roman numeral: MCMXLIII
Binary: 11110010111
Octal: 3627
Hexadecimal: 0x797
Base64: B5c=
One's complement: 63,592 (16-bit)

In other bases

ternary (3) 2122222

quaternary (4) 132113

quinary (5) 30233

senary (6) 12555

septenary (7) 5444

nonary (9) 2588

undecimal (11) 1507

duodecimal (12) 115b

tridecimal (13) b66

tetradecimal (14) 9cb

pentadecimal (15) 898

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒁹𒁹𒁹
Egyptian hieroglyphic: 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺
Greek (Milesian): ͵αϡμγʹ
Mayan (base 20): 𝋤·𝋱·𝋣
Chinese: 一千九百四十三
Chinese (financial): 壹仟玖佰肆拾參

In other modern scripts

Eastern Arabic ١٩٤٣ Devanagari १९४३ Bengali ১৯৪৩ Tamil ௧௯௪௩ Thai ๑๙๔๓ Tibetan ༡༩༤༣ Khmer ១៩៤៣ Lao ໑໙໔໓ Burmese ၁၉၄၃

Digit at this position in famous constants

π — Pi (π): Digit 1,943 = 3
e — Euler's number (e): Digit 1,943 = 8
φ — Golden ratio (φ): Digit 1,943 = 5
√2 — Pythagoras's (√2): Digit 1,943 = 8
ln 2 — Natural log of 2: Digit 1,943 = 6
γ — Euler-Mascheroni (γ): Digit 1,943 = 4

Also seen as

Unicode codepoint

Thaana Letter Chaviyani

U+0797

Other letter (Lo)

UTF-8 encoding: DE 97 (2 bytes).

Lookup U+0797 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000797

RGB(0, 7, 151)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.151.

Address: 0.0.7.151
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.7.151

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

Position in π

The digit sequence 1943 first appears in π at position 2,856 of the decimal expansion (the 2,856ordinal-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.

Look up 1943 on Pi Search ↗