2,020
2,020 is a composite number, even, a calendar year.
Notable events — 2020 AD
- Jan 3 A US drone strike at Baghdad airport kills Iranian general Qasem Soleimani.
- Jan 26 Kobe Bryant and eight others die in a helicopter crash in Calabasas, California.
- Jan 31 The United Kingdom formally leaves the European Union.
- Mar 11 The WHO declares the COVID-19 outbreak a pandemic.
- Mar 24 The 2020 Summer Olympics are postponed to 2021 amid the pandemic.
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
-
53
Long year: contains 53 ISO weeks.
- Started on
-
Wednesday
January 1, 2020
- Ended on
-
Thursday
December 31, 2020
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Easter Sunday
-
April 12
Sunday, April 12, 2020
- Decade
-
2020s
2020–2029
- Century
-
21st century
2001–2100
- Millennium
-
3rd millennium
2001–3000
- Years ago
-
6
6 years before 2026.
- US presidential election
-
Yes
US holds a presidential election in years divisible by 4 starting from 1788.
- Summer Olympics
-
Yes
Tokyo 2020 was held in 2021 due to the COVID-19 pandemic but retained its 2020 branding.
In other calendars
- Hebrew
-
5780 / 5781 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1441 / 1442 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Metal zodiac:Rat
Sexagenary cycle position 37 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2563 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1398 / 1399 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
2012 / 2013 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1942 / 1941 Saka
Indian national calendar; year starts in March.
- Japanese
-
Reiwa 2
Reign-era counting from the start of each emperor's reign.
Properties
Primality
Prime factorization: 2 2 × 5 × 101
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- two thousand twenty
- Ordinal
- 2020th
- Roman numeral
- MMXX
- Binary
- 11111100100
- Octal
- 3744
- Hexadecimal
- 0x7E4
- Base64
- B+Q=
- One's complement
- 63,515 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆼𓆼𓎆𓎆
- Greek (Milesian)
- ͵βκʹ
- Mayan (base 20)
- 𝋥·𝋡·𝋠
- Chinese
- 二千零二十
- Chinese (financial)
- 貳仟零貳拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 2,020 = 8
- e — Euler's number (e)
- Digit 2,020 = 4
- φ — Golden ratio (φ)
- Digit 2,020 = 2
- √2 — Pythagoras's (√2)
- Digit 2,020 = 5
- ln 2 — Natural log of 2
- Digit 2,020 = 9
- γ — Euler-Mascheroni (γ)
- Digit 2,020 = 1
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 2020, here are decompositions:
- 3 + 2017 = 2020
- 17 + 2003 = 2020
- 23 + 1997 = 2020
- 41 + 1979 = 2020
- 47 + 1973 = 2020
- 71 + 1949 = 2020
- 89 + 1931 = 2020
- 107 + 1913 = 2020
Showing the first eight; more decompositions exist.
UTF-8 encoding: DF A4 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.228.
- Address
- 0.0.7.228
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.7.228
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 2020 first appears in π at position 7,285 of the decimal expansion (the 7,285ordinal-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.