1,582
1,582 is a composite number, even, a calendar year.
Notable events — 1582 AD
- Oct 15 The Gregorian calendar takes effect in Catholic Europe.
- Jun 21 Oda Nobunaga is killed at Honnō-ji; Toyotomi Hideyoshi avenges him.
- Undated Sir Walter Raleigh begins planning an English colony in North America.
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, 1582
- Ended on
-
Friday
December 31, 1582
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
1580s
1580–1589
- Century
-
16th century
1501–1600
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
444
444 years before 2026.
In other calendars
- Hebrew
-
5342 / 5343 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
989 / 990 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Water zodiac:Horse
Sexagenary cycle position 19 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2125 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
960 / 961 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1574 / 1575 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1504 / 1503 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 2 × 7 × 113
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand five hundred eighty-two
- Ordinal
- 1582nd
- Roman numeral
- MDLXXXII
- Binary
- 11000101110
- Octal
- 3056
- Hexadecimal
- 0x62E
- Base64
- Bi4=
- One's complement
- 63,953 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵αφπβʹ
- Mayan (base 20)
- 𝋣·𝋳·𝋢
- Chinese
- 一千五百八十二
- Chinese (financial)
- 壹仟伍佰捌拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,582 = 4
- e — Euler's number (e)
- Digit 1,582 = 0
- φ — Golden ratio (φ)
- Digit 1,582 = 4
- √2 — Pythagoras's (√2)
- Digit 1,582 = 9
- ln 2 — Natural log of 2
- Digit 1,582 = 9
- γ — Euler-Mascheroni (γ)
- Digit 1,582 = 0
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1582, here are decompositions:
- 3 + 1579 = 1582
- 11 + 1571 = 1582
- 23 + 1559 = 1582
- 29 + 1553 = 1582
- 59 + 1523 = 1582
- 71 + 1511 = 1582
- 83 + 1499 = 1582
- 89 + 1493 = 1582
Showing the first eight; more decompositions exist.
UTF-8 encoding: D8 AE (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.6.46.
- Address
- 0.0.6.46
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.6.46
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1582 first appears in π at position 17,377 of the decimal expansion (the 17,377ordinal-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.