1149
RFC 1149 specifies the transmission of IP datagrams over avian carriers.
- Odd
- Composite
Where 1149 fits
Why 1149 is special
It was published on 1 April 1990 as a joke and then implemented successfully in Norway in 2001, with nine packets sent and four returned.
1149 connects to:
- historical years — appears in
- 2324 — appears alongside
- assigned identifiers — appears in
Same number, different meanings
How 1149 is understood across different contexts — never implying one meaning because of another.
- Mathematics
It was published on 1 April 1990 as a joke and then implemented successfully in Norway in 2001, with nine packets sent and four returned.
- History
In 1149, the rebuilt Church of the Holy Sepulchre was consecrated by the crusaders (Jerusalem).
- Technology & computing
IEEE 1149.1 defines JTAG boundary scan, allowing a chip's pins to be tested and its internals accessed through four dedicated signals. It is also the usual debug interface on embedded processors.
1149 is part of
Factors & digit properties
- Divisors (4)
- 1, 3, 383, 1149
- Prime factorisation
- 3 × 383
- Digit sum
- 15
- Digital root
- 6
Representations
- Decimal
- 1149
- Scientific notation
- 1.149 × 10^3
Roman numerals
M C X L I X
MCXLIX uses the subtractive pair IX: one before ten — ten minus one.
Binary
1 0 0 0 1 1 1 1 1 0 1
1 × 1,024 + 0 × 512 + 0 × 256 + 0 × 128 + 1 × 64 + 1 × 32 + 1 × 16 + 1 × 8 + 1 × 4 + 0 × 2 + 1 × 1 = 1,149
Octal
2 1 7 5
2 × 512 + 1 × 64 + 7 × 8 + 5 × 1 = 1,149
Hexadecimal
4 7 d
4 × 256 + 7 × 16 + d × 1 = 1,149
Read as powers of two: 1,024 + 64 + 32 + 16 + 8 + 4 + 1 = 1,149.
In historical numeral systems
Egyptian
1 lotus, 1 coil of rope, 4 hobbles, 9 strokes
1 × 1,000 + 1 × 100 + 4 × 10 + 9 × 1 = 1,149. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
1 corner wedge + 9 vertical wedges (sixties place), 9 vertical wedges (units place)
19 × 60 + 9 = 1149. Places are separated by a space on the tablet, with the higher place written first.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Deficient number
- Semiprime
Related numbers & connections
1149 is a year in the 12th century, in the 1140s.
Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
- appears alongside2324
why?
Strength 0.50, confidence "high".
- appears inNumbers assigned as identifiers
why?
Strength 0.50, confidence "high".
History
In 1149, the rebuilt Church of the Holy Sepulchre was consecrated by the crusaders (Jerusalem).
DocumentedHistoryGeography: JerusalemPeriod: 1149
Technology & computing
IEEE 1149.1 defines JTAG boundary scan, allowing a chip's pins to be tested and its internals accessed through four dedicated signals. It is also the usual debug interface on embedded processors.
DocumentedTechnology & computingGeography: International — IEEEPeriod: 1990–RFC 1149 describes carrying IP datagrams by homing pigeon, noting high latency and low throughput. A Bergen group implemented it in 2001 and recorded ping times in the order of an hour.
DocumentedTechnology & computingGeography: International — IETFPeriod: 1990
Common questions
Is 1149 a prime number?
No, 1149 is not prime.
What are the factors of 1149?
The factors of 1149 are 1, 3, 383, 1149.
What is 1149 in Roman numerals?
1149 in Roman numerals is MCXLIX. IX is subtractive: one before ten — ten minus one. Written additively it would be MCXXXXVIIII, which Roman inscriptions used freely — the strict subtractive form is a later convention.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 3 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026