1,972
1,972 is a composite number, even, a calendar year.
Notable events — 1972 AD
- Jan 30 British soldiers shoot dead 14 unarmed protesters on Bloody Sunday in Derry, Northern Ireland.
- Feb 21 President Nixon visits China, ending two decades of frozen relations.
- Jun 17 Burglars are caught breaking into the DNC headquarters at the Watergate complex.
- Sep 5 Palestinian gunmen attack the Israeli team at the Munich Olympics; 11 athletes die.
- Dec 7 Apollo 17 launches as the last crewed mission to the Moon.
Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0
Year facts
- Year type
-
Leap year
Divisible by 4 and not by 100; February has 29 days.
- Days in year
- 366
- ISO weeks
- 52
- Started on
-
Saturday
January 1, 1972
- Ended on
-
Sunday
December 31, 1972
- Friday the 13ths
-
1
One Friday the 13th this year.
- Easter Sunday
-
April 2
Sunday, April 2, 1972
- Decade
-
1970s
1970–1979
- Century
-
20th century
1901–2000
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
54
54 years before 2026.
- US presidential election
-
Yes
US holds a presidential election in years divisible by 4 starting from 1788.
- Summer Olympics
- Yes
- Winter Olympics
-
Yes
Held in the same year as the Summer Games until 1992.
In other calendars
- Hebrew
-
5732 / 5733 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1391 / 1392 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Water zodiac:Rat
Sexagenary cycle position 49 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2515 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1350 / 1351 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1964 / 1965 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1894 / 1893 Saka
Indian national calendar; year starts in March.
- Japanese
-
Shōwa 47
Reign-era counting from the start of each emperor's reign.
Properties
Primality
Prime factorization: 2 2 × 17 × 29
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand nine hundred seventy-two
- Ordinal
- 1972nd
- Roman numeral
- MCMLXXII
- Binary
- 11110110100
- Octal
- 3664
- Hexadecimal
- 0x7B4
- Base64
- B7Q=
- One's complement
- 63,563 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵αϡοβʹ
- Mayan (base 20)
- 𝋤·𝋲·𝋬
- Chinese
- 一千九百七十二
- Chinese (financial)
- 壹仟玖佰柒拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,972 = 0
- e — Euler's number (e)
- Digit 1,972 = 9
- φ — Golden ratio (φ)
- Digit 1,972 = 4
- √2 — Pythagoras's (√2)
- Digit 1,972 = 5
- ln 2 — Natural log of 2
- Digit 1,972 = 4
- γ — Euler-Mascheroni (γ)
- Digit 1,972 = 3
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1972, here are decompositions:
- 23 + 1949 = 1972
- 41 + 1931 = 1972
- 59 + 1913 = 1972
- 71 + 1901 = 1972
- 83 + 1889 = 1972
- 101 + 1871 = 1972
- 149 + 1823 = 1972
- 239 + 1733 = 1972
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.180.
- Address
- 0.0.7.180
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.7.180
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1972 first appears in π at position 10,945 of the decimal expansion (the 10,945ordinal-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.