1,156
1,156 is a composite number, even, a calendar year.
Historical context — 1156 AD
Calendar year
Year 1156 (MCLVI) was a leap year starting on Sunday of the Julian calendar.
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Year facts
- Year type
-
Leap year
Divisible by 4 and not by 100; February has 29 days.
- Days in year
- 366
- ISO weeks
- 52
- Started on
-
Sunday
January 1, 1156
- Ended on
-
Monday
December 31, 1156
- Friday the 13ths
-
3
3 Friday the 13ths this year.
- Decade
-
1150s
1150–1159
- Century
-
12th century
1101–1200
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
870
870 years before 2026.
In other calendars
- Hebrew
-
4916 / 4917 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
550 / 551 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Fire zodiac:Rat
Sexagenary cycle position 13 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1699 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
534 / 535 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1148 / 1149 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1078 / 1077 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 13
- Digit product
- 30
- Digital root
- 4
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 6,511
- Recamán's sequence
- a(1,860) = 1,156
- Square (n²)
- 1,336,336
- Cube (n³)
- 1,544,804,416
- Square root (√n)
- 34
- Divisor count
- 9
- σ(n) — sum of divisors
- 2,149
- φ(n) — Euler's totient
- 544
- Sum of prime factors
- 38
Primality
Prime factorization: 2 2 × 17 2
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand one hundred fifty-six
- Ordinal
- 1156th
- Roman numeral
- MCLVI
- Binary
- 10010000100
- Octal
- 2204
- Hexadecimal
- 0x484
- Base64
- BIQ=
- One's complement
- 64,379 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αρνϛʹ
- Mayan (base 20)
- 𝋢·𝋱·𝋰
- Chinese
- 一千一百五十六
- Chinese (financial)
- 壹仟壹佰伍拾陸
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,156 = 4
- e — Euler's number (e)
- Digit 1,156 = 1
- φ — Golden ratio (φ)
- Digit 1,156 = 0
- √2 — Pythagoras's (√2)
- Digit 1,156 = 6
- ln 2 — Natural log of 2
- Digit 1,156 = 8
- γ — Euler-Mascheroni (γ)
- Digit 1,156 = 6
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1156, here are decompositions:
- 3 + 1153 = 1156
- 5 + 1151 = 1156
- 47 + 1109 = 1156
- 53 + 1103 = 1156
- 59 + 1097 = 1156
- 107 + 1049 = 1156
- 137 + 1019 = 1156
- 173 + 983 = 1156
Showing the first eight; more decompositions exist.
UTF-8 encoding: D2 84 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.132.
- Address
- 0.0.4.132
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.4.132
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1156 first appears in π at position 6,926 of the decimal expansion (the 6,926ordinal-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.