119
119 is the fire and ambulance emergency number in Japan, South Korea, Taiwan and China.
- Odd
- Composite
Where 119 fits
Why 119 is special
119 is the counterpart to 110 across much of East Asia: police on 110, fire and ambulance on 119. Japan adopted it in 1927, reportedly choosing the digits so that the long pull of 9 on a rotary dial gave a caller time to compose themselves before the call connected — an explanation widely repeated but not firmly documented. South Korea, Taiwan and China use the same split.
119 connects to:
- emergency telephone numbers — is used by
- 110 — appears alongside
Same number, different meanings
How 119 is understood across different contexts — never implying one meaning because of another.
- Mathematics
119 is the counterpart to 110 across much of East Asia: police on 110, fire and ambulance on 119. Japan adopted it in 1927, reportedly choosing the digits so that the long pull of 9 on a rotary dial gave a caller time to compose themselves before the call connected — an explanation widely repeated but not firmly documented. South Korea, Taiwan and China use the same split.
- Everyday life
Japan, South Korea and Taiwan reach fire and ambulance on 119 and police on 110, so the region shares a two-number convention rather than a single emergency number. China uses the same pair with the services assigned the same way.
- History
Japan assigned 119 to fire in 1927. The traditional explanation is ergonomic: 1 is the shortest pull on a rotary dial and 9 the longest, so the sequence is quick to start and gives a panicking caller a moment before the call connects. The date is documented; the reasoning is a received account rather than a recorded decision.
119 is part of
Factors & digit properties
- Divisors (4)
- 1, 7, 17, 119
- Prime factorisation
- 7 × 17
- Digit sum
- 11
- Digital root
- 2
Representations
- Decimal
- 119
- Scientific notation
- 1.190 × 10^2
Roman numerals
C X I X
CXIX uses the subtractive pair IX: one before ten — ten minus one.
Binary
1 1 1 0 1 1 1
1 × 64 + 1 × 32 + 1 × 16 + 0 × 8 + 1 × 4 + 1 × 2 + 1 × 1 = 119
Octal
1 6 7
1 × 64 + 6 × 8 + 7 × 1 = 119
Hexadecimal
7 7
7 × 16 + 7 × 1 = 119
Read as powers of two: 64 + 32 + 16 + 4 + 2 + 1 = 119.
In historical numeral systems
Egyptian
1 coil of rope, 1 hobble, 9 strokes
1 × 100 + 1 × 10 + 9 × 1 = 119. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
1 vertical wedge (sixties place), 5 corner wedges + 9 vertical wedges (units place)
1 × 60 + 59 = 119. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
rho, then iota, then theta, marked as a numeral
rho-iota-theta + keraia
rho + iota + theta written in descending order and added — the letters carry their values wherever they stand, so this is addition, not place value.
Hebrew numerals
qof, then yod, then tet
qof-yod-tet
qof (100) + yod (10) + tet (9) = 119, written in descending order.
Maya
1 bar (upper, twenties place) over 3 bars + 4 dots (lower, units place)
5 × 20 + 19 = 119. Places stack vertically with the smallest at the bottom, so the upper group is worth twenty times the lower.
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
119 reaches fire and ambulance across Japan, South Korea, Taiwan and China.
Numbers Around Us
- is used byEmergency telephone numbers
why?
Strength 0.50, confidence "high".
- appears alongside110
why?
Strength 0.50, confidence "high".
Everyday life
Japan, South Korea and Taiwan reach fire and ambulance on 119 and police on 110, so the region shares a two-number convention rather than a single emergency number. China uses the same pair with the services assigned the same way.
DocumentedEveryday lifeGeography: Japan, South Korea, Taiwan and ChinaPeriod: 20th century–Across Japan, South Korea, Taiwan and China the pairing is the same: 110 for police, 119 for fire and ambulance. Knowing one implies the other, which is the practical value of a shared convention across neighbouring countries that agree on little else about telephony.
DocumentedEveryday lifeGeography: Japan, South Korea, Taiwan and China
History
Japan assigned 119 to fire in 1927. The traditional explanation is ergonomic: 1 is the shortest pull on a rotary dial and 9 the longest, so the sequence is quick to start and gives a panicking caller a moment before the call connects. The date is documented; the reasoning is a received account rather than a recorded decision.
DocumentedHistoryGeography: JapanPeriod: 1927
Common questions
Is 119 a prime number?
No, 119 is not prime.
What are the factors of 119?
The factors of 119 are 1, 7, 17, 119.
What is 119 in Roman numerals?
119 in Roman numerals is CXIX. IX is subtractive: one before ten — ten minus one. Written additively it would be CXVIIII, 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