1,268
1,268 is a composite number, even, a calendar year.
Historical context — 1268 AD
Calendar year
Year 1268 (MCCLXVIII) 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, 1268
- Ended on
-
Monday
December 31, 1268
- Friday the 13ths
-
3
3 Friday the 13ths this year.
- Decade
-
1260s
1260–1269
- Century
-
13th century
1201–1300
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
758
758 years before 2026.
In other calendars
- Hebrew
-
5028 / 5029 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
666 / 667 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Dragon
Sexagenary cycle position 5 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1811 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
646 / 647 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1260 / 1261 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1190 / 1189 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 17
- Digit product
- 96
- Digital root
- 8
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 8,621
- Recamán's sequence
- a(8,452) = 1,268
- Square (n²)
- 1,607,824
- Cube (n³)
- 2,038,720,832
- Divisor count
- 6
- σ(n) — sum of divisors
- 2,226
- φ(n) — Euler's totient
- 632
- Sum of prime factors
- 321
Primality
Prime factorization: 2 2 × 317
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand two hundred sixty-eight
- Ordinal
- 1268th
- Roman numeral
- MCCLXVIII
- Binary
- 10011110100
- Octal
- 2364
- Hexadecimal
- 0x4F4
- Base64
- BPQ=
- One's complement
- 64,267 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ασξηʹ
- Mayan (base 20)
- 𝋣·𝋣·𝋨
- Chinese
- 一千二百六十八
- Chinese (financial)
- 壹仟貳佰陸拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,268 = 8
- e — Euler's number (e)
- Digit 1,268 = 9
- φ — Golden ratio (φ)
- Digit 1,268 = 0
- √2 — Pythagoras's (√2)
- Digit 1,268 = 4
- ln 2 — Natural log of 2
- Digit 1,268 = 9
- γ — Euler-Mascheroni (γ)
- Digit 1,268 = 7
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1268, here are decompositions:
- 19 + 1249 = 1268
- 31 + 1237 = 1268
- 37 + 1231 = 1268
- 67 + 1201 = 1268
- 97 + 1171 = 1268
- 139 + 1129 = 1268
- 151 + 1117 = 1268
- 181 + 1087 = 1268
Showing the first eight; more decompositions exist.
UTF-8 encoding: D3 B4 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.244.
- Address
- 0.0.4.244
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.4.244
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1268 first appears in π at position 7,057 of the decimal expansion (the 7,057ordinal-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.