1,178
1,178 is a composite number, even, a calendar year.
Historical context — 1178 AD
Calendar year
Year 1178 (MCLXXVIII) was a common year starting on Sunday of the Julian calendar, the 1178th year of the Common Era (CE) and Anno Domini (AD) designations, the 178th year of the 2nd millennium, the 78th year of the 12th century, and the 9th year of the 1170s decade.
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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
-
Sunday
January 1, 1178
- Ended on
-
Sunday
December 31, 1178
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Decade
-
1170s
1170–1179
- Century
-
12th century
1101–1200
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
848
848 years before 2026.
In other calendars
- Hebrew
-
4938 / 4939 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
573 / 574 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Dog
Sexagenary cycle position 35 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1721 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
556 / 557 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1170 / 1171 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1100 / 1099 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 2 × 19 × 31
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand one hundred seventy-eight
- Ordinal
- 1178th
- Roman numeral
- MCLXXVIII
- Binary
- 10010011010
- Octal
- 2232
- Hexadecimal
- 0x49A
- Base64
- BJo=
- One's complement
- 64,357 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αροηʹ
- Mayan (base 20)
- 𝋢·𝋲·𝋲
- Chinese
- 一千一百七十八
- Chinese (financial)
- 壹仟壹佰柒拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,178 = 9
- e — Euler's number (e)
- Digit 1,178 = 8
- φ — Golden ratio (φ)
- Digit 1,178 = 2
- √2 — Pythagoras's (√2)
- Digit 1,178 = 2
- ln 2 — Natural log of 2
- Digit 1,178 = 1
- γ — Euler-Mascheroni (γ)
- Digit 1,178 = 9
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1178, here are decompositions:
- 7 + 1171 = 1178
- 61 + 1117 = 1178
- 109 + 1069 = 1178
- 127 + 1051 = 1178
- 139 + 1039 = 1178
- 157 + 1021 = 1178
- 181 + 997 = 1178
- 211 + 967 = 1178
Showing the first eight; more decompositions exist.
UTF-8 encoding: D2 9A (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.154.
- Address
- 0.0.4.154
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.4.154
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1178 first appears in π at position 6,290 of the decimal expansion (the 6,290ordinal-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.