1,100
1,100 is a composite number, even, a calendar year.
Notable events — 1100 AD
- Aug 5 Henry I is crowned king of England.
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, 1100
- Ended on
-
Monday
December 31, 1100
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Decade
-
1100s
1100–1109
- Century
-
11th century
1001–1100
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
926
926 years before 2026.
In other calendars
- Hebrew
-
4860 / 4861 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
493 / 494 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Metal zodiac:Dragon
Sexagenary cycle position 17 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1643 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
478 / 479 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1092 / 1093 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1022 / 1021 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 2
- Digit product
- 0
- Digital root
- 2
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 11
- Flips to (rotate 180°)
- 11
- Recamán's sequence
- a(1,972) = 1,100
- Square (n²)
- 1,210,000
- Cube (n³)
- 1,331,000,000
- Divisor count
- 18
- σ(n) — sum of divisors
- 2,604
- φ(n) — Euler's totient
- 400
- Sum of prime factors
- 25
Primality
Prime factorization: 2 2 × 5 2 × 11
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand one hundred
- Ordinal
- 1100th
- Roman numeral
- MC
- Binary
- 10001001100
- Octal
- 2114
- Hexadecimal
- 0x44C
- Base64
- BEw=
- One's complement
- 64,435 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓆼𓍢
- Greek (Milesian)
- ͵αρʹ
- Mayan (base 20)
- 𝋢·𝋯·𝋠
- Chinese
- 一千一百
- Chinese (financial)
- 壹仟壹佰
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,100 = 5
- e — Euler's number (e)
- Digit 1,100 = 6
- φ — Golden ratio (φ)
- Digit 1,100 = 9
- √2 — Pythagoras's (√2)
- Digit 1,100 = 7
- ln 2 — Natural log of 2
- Digit 1,100 = 8
- γ — Euler-Mascheroni (γ)
- Digit 1,100 = 8
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1100, here are decompositions:
- 3 + 1097 = 1100
- 7 + 1093 = 1100
- 13 + 1087 = 1100
- 31 + 1069 = 1100
- 37 + 1063 = 1100
- 61 + 1039 = 1100
- 67 + 1033 = 1100
- 79 + 1021 = 1100
Showing the first eight; more decompositions exist.
UTF-8 encoding: D1 8C (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.76.
- Address
- 0.0.4.76
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.4.76
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1100 first appears in π at position 3,847 of the decimal expansion (the 3,847ordinal-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.