254
254 is a composite number, even, a calendar year.
Historical context — 254 AD
Calendar year
Year 254 (CCLIV) was a common year starting on Sunday of the Julian calendar.
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Historical context — 254 BC
Calendar year
Year 254 BC was a year of the pre-Julian Roman 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
-
Sunday
January 1, 254
- Ended on
-
Sunday
December 31, 254
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Decade
-
250s
250–259
- Century
-
3rd century
201–300
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,772
1772 years before 2026.
In other calendars
- Hebrew
-
4014 / 4015 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
-
797 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Ethiopian
-
246 / 247 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
176 / 175 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 2 × 127
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- two hundred fifty-four
- Ordinal
- 254th
- Roman numeral
- CCLIV
- Binary
- 11111110
- Octal
- 376
- Hexadecimal
- 0xFE
- Base64
- /g==
- One's complement
- 1 (8-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- σνδʹ
- Mayan (base 20)
- 𝋬·𝋮
- Chinese
- 二百五十四
- Chinese (financial)
- 貳佰伍拾肆
Digit at this position in famous constants
- π — Pi (π)
- Digit 254 = 6
- e — Euler's number (e)
- Digit 254 = 2
- φ — Golden ratio (φ)
- Digit 254 = 6
- √2 — Pythagoras's (√2)
- Digit 254 = 5
- ln 2 — Natural log of 2
- Digit 254 = 8
- γ — Euler-Mascheroni (γ)
- Digit 254 = 7
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 254, here are decompositions:
- 3 + 251 = 254
- 13 + 241 = 254
- 31 + 223 = 254
- 43 + 211 = 254
- 61 + 193 = 254
- 73 + 181 = 254
- 97 + 157 = 254
- 103 + 151 = 254
Showing the first eight; more decompositions exist.
UTF-8 encoding: C3 BE (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.254.
- Address
- 0.0.0.254
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.0.254
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The number 254 is an active NANP area code (North American Numbering Plan).
- Primary area
- Waco / Killeen
- Region
- Texas
- Country
- United States
Most NANP area codes have multiple overlays in dense regions; the primary area listed is the historic/largest population center for this code.