1,841
1,841 is a composite number, odd, a calendar year.
Notable events — 1841 AD
- Mar 4 William Henry Harrison is inaugurated US president; he dies a month later.
- Apr 4 Harrison becomes the first US president to die in office; John Tyler succeeds him.
- Aug 9 The Amistad Africans win their case at the US Supreme Court.
- Jun 20 Samuel Morse files a US patent for the telegraph.
- Sep 4 John Tyler is expelled from the Whig Party.
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, 1841
- Ended on
-
Friday
December 31, 1841
- Friday the 13ths
-
1
One Friday the 13th this year.
- Easter Sunday
-
April 11
Sunday, April 11, 1841
- Decade
-
1840s
1840–1849
- Century
-
19th century
1801–1900
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
185
185 years before 2026.
In other calendars
- Hebrew
-
5601 / 5602 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1256 / 1257 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Metal zodiac:Ox
Sexagenary cycle position 38 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2384 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1219 / 1220 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1833 / 1834 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1763 / 1762 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 7 × 263
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand eight hundred forty-one
- Ordinal
- 1841st
- Roman numeral
- MDCCCXLI
- Binary
- 11100110001
- Octal
- 3461
- Hexadecimal
- 0x731
- Base64
- BzE=
- One's complement
- 63,694 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋 𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺
- Greek (Milesian)
- ͵αωμαʹ
- Mayan (base 20)
- 𝋤·𝋬·𝋡
- Chinese
- 一千八百四十一
- Chinese (financial)
- 壹仟捌佰肆拾壹
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,841 = 2
- e — Euler's number (e)
- Digit 1,841 = 1
- φ — Golden ratio (φ)
- Digit 1,841 = 9
- √2 — Pythagoras's (√2)
- Digit 1,841 = 2
- ln 2 — Natural log of 2
- Digit 1,841 = 8
- γ — Euler-Mascheroni (γ)
- Digit 1,841 = 4
Also seen as
UTF-8 encoding: DC B1 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.49.
- Address
- 0.0.7.49
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.7.49
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1841 first appears in π at position 1,574 of the decimal expansion (the 1,574ordinal-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.