14
14 is a composite number, even, a calendar year.
14 (fourteen) is an even 2-digit number. It is a composite number with 4 divisors, and factors as 2 × 7. It is a Catalan number. Written other ways, in Roman numerals it is XIV and in binary, 1110.
Interestingness
Historical context — 14 AD
Calendar year
AD 14 (XIV) was a common year starting on Monday of the Julian calendar.
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Historical context — 14 BC
Calendar year
Year 14 BC was either a common year starting on Thursday or Friday or a leap year starting on Wednesday, Thursday or Friday of the Julian calendar and a common year starting on Tuesday of the Proleptic Julian calendar.
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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
-
Wednesday
January 1, 14
- Ended on
-
Wednesday
December 31, 14
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
10s
10–19
- Century
-
1st century
1–100
- Millennium
-
1st millennium
1–1000
- Years ago
-
2,012
2012 years before 2026.
In other calendars
- Hebrew
-
3774 / 3775 AM
Rosh Hashanah falls in September/October.
- Chinese
-
Year of the zodiac:Wood zodiac:Dog
Sexagenary cycle position 11 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
557 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Ethiopian
-
6 / 7 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
-64 / -65 Saka
Indian national calendar; year starts in March.
Cultural significance
Even more unlucky than 4 alone — "certain death."
一四 (yīsì) sounds like 要死 (yàosǐ, "will die").
Sourced from Wikipedia (Numerology, Chinese numerology, Gematria, and per-culture articles).
Properties
Primality
Prime factorization: 2 × 7
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√14 = [3; (1, 2, 1, 6)]
Period length 4 — the block in parentheses repeats forever.
Representations
- In words
- fourteen
- Ordinal
- 14th
- Roman numeral
- XIV
- Binary
- 1110
- Octal
- 16
- Hexadecimal
- 0xE
- Base64
- Dg==
- One's complement
- 241 (8-bit)
- Scientific notation
- 1.4 × 10¹
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ιδʹ
- Mayan (base 20)
- 𝋮
- Chinese
- 一十四
- Chinese (financial)
- 壹拾肆
Digit at this position in famous constants
- π — Pi (π)
- Digit 14 = 7
- e — Euler's number (e)
- Digit 14 = 0
- φ — Golden ratio (φ)
- Digit 14 = 8
- √2 — Pythagoras's (√2)
- Digit 14 = 0
- ln 2 — Natural log of 2
- Digit 14 = 9
- γ — Euler-Mascheroni (γ)
- Digit 14 = 5
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 14, here are decompositions:
- 3 + 11 = 14
- 7 + 7 = 14
As an ASCII codepoint, 14 is control character (0x0E). ASCII control character.
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.14.
- Address
- 0.0.0.14
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.0.14
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Matches numbered highway designation:
- I-14 — Central Texas (Belton to Midway).
Type 14 on a seven-segment calculator, flip it 180°, and the display reads:
hI
A staple of calculator humor since pocket calculators put digits in front of bored students.
As a MIDI note number, 14 is D0 (18.4 Hz at concert pitch). (below the ~20 Hz floor of human hearing — likely inaudible)
On the periodic table, atomic number 14 is Silicon (Si) — period 3.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.