1,798
1,798 is a composite number, even, a calendar year.
Notable events — 1798 AD
- May 23 The Irish Rebellion against British rule begins.
- Jul 21 Napoleon defeats the Mamluks at the Battle of the Pyramids.
- Aug 1 Nelson destroys the French fleet at the Battle of the Nile.
- Jul 14 Congress passes the Alien and Sedition Acts.
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
-
Monday
January 1, 1798
- Ended on
-
Monday
December 31, 1798
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Easter Sunday
-
April 8
Sunday, April 8, 1798
- Decade
-
1790s
1790–1799
- Century
-
18th century
1701–1800
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
228
228 years before 2026.
In other calendars
- Hebrew
-
5558 / 5559 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1212 / 1213 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Horse
Sexagenary cycle position 55 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2341 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1176 / 1177 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1790 / 1791 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1720 / 1719 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 2 × 29 × 31
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand seven hundred ninety-eight
- Ordinal
- 1798th
- Roman numeral
- MDCCXCVIII
- Binary
- 11100000110
- Octal
- 3406
- Hexadecimal
- 0x706
- Base64
- BwY=
- One's complement
- 63,737 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αψϟηʹ
- Mayan (base 20)
- 𝋤·𝋩·𝋲
- Chinese
- 一千七百九十八
- Chinese (financial)
- 壹仟柒佰玖拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,798 = 4
- e — Euler's number (e)
- Digit 1,798 = 4
- φ — Golden ratio (φ)
- Digit 1,798 = 1
- √2 — Pythagoras's (√2)
- Digit 1,798 = 6
- ln 2 — Natural log of 2
- Digit 1,798 = 3
- γ — Euler-Mascheroni (γ)
- Digit 1,798 = 9
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1798, here are decompositions:
- 11 + 1787 = 1798
- 89 + 1709 = 1798
- 101 + 1697 = 1798
- 131 + 1667 = 1798
- 179 + 1619 = 1798
- 191 + 1607 = 1798
- 197 + 1601 = 1798
- 227 + 1571 = 1798
Showing the first eight; more decompositions exist.
UTF-8 encoding: DC 86 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.6.
- Address
- 0.0.7.6
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.7.6
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1798 first appears in π at position 547 of the decimal expansion (the 547ordinal-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.