Number 191 facts

The odd number 191 is spelled 🔊, and written in words: one hundred and ninety-one. The ordinal number 191st is said 🔊 and written as: one hundred and ninety-first. The meaning of the number 191 in Maths: Is it Prime? Factorization and prime factors tree. The square root and cube root of 191. What is 191 in computer science, numerology, codes and images, writing and naming in other languages. Other interesting facts, news related to 191.

Interesting facts about the number 191


  • (191) Kolga is asteroid number 191. It was discovered by C. H. F. Peters from Litchfield Observatory, Clinton on 9/30/1878.

Aircrafts and flights

  • 05/25/1979 the American Airlines plane, flight number 191, McDonnell Douglas DC-10-10 crashed in Des Plaines, Illinois, US 258 passengers and 13 crew members died.
  • 08/02/1985 the Delta Air Lines plane, flight number 191, Lockheed L-1011 TriStar crashed in Dallas–Fort Worth, Texas, US 126 passengers and 8 crew members died.

Distances between cities

  • There is a 191 miles (306 km) direct distance between Birmingham (United Kingdom) and Dublin (Ireland).
  • There is a 119 miles (191 km) direct distance between Daejeon (South Korea) and Ulsan (South Korea).
  • There is a 191 miles (306 km) direct distance between Dhaka (Bangladesh) and Guwahati (India).
  • There is a 119 miles (191 km) direct distance between Gujrānwāla (Pakistan) and Rawalpindi (Pakistan).
  • More distances between cities ...
  • There is a 191 miles (307 km) direct distance between Gwalior (India) and Meerut (India).
  • There is a 119 miles (191 km) direct distance between Changshu City (China) and Nanjing (China).
  • There is a 191 miles (307 km) direct distance between Kaohsiung (Taiwan) and Xiamen (China).
  • There is a 119 miles (191 km) direct distance between Nanjing (China) and Suzhou (China).
  • There is a 191 miles (307 km) direct distance between Seoul (South Korea) and Ulsan (South Korea).
  • There is a 191 miles (307 km) direct distance between Taiyuan (China) and Xinxiang (China).


  • Pokémon Sunkern (Himanattsu, Himanuts) is a Pokémon number # 191 of the National Pokédex. Sunkern is a grass-type Pokémon in the second generation. It is a plant egg group Pokémon. Sunkern's other indexes are Johto index 102 , Teselia index 020 .

History and politics

  • ISO 3166 country codes for Croatia are HR, HRV, 191 and internet top-level domain is .hr
  • United Nations Security Council Resolution number 191, adopted 18 June 1964. South African apartheid. Resolution text.


  • 191 is the smallest palindromic prime whose sum of digits is a multidigit palindromic prime
  • 191 is a number n for which n, n+2, n+6, and n+8 are all prime.

What is 191 in other units

The decimal (Arabic) number 191 converted to a Roman number is CXCI. Roman and decimal number conversions.
The number 191 converted to a Mayan number is mayan number 191
Decimal and Mayan number conversions.

Weight conversion

191 kilograms (kg) = 421.1 pounds (lbs)
191 pounds (lbs) = 86.6 kilograms (kg)

Length conversion

191 kilometers (km) equals to 118.682 miles (mi).
191 miles (mi) equals to 307.385 kilometers (km).
191 meters (m) equals to 307.385 feet (ft).
191 feet (ft) equals 58.218 meters (m).
191 centimeters (cm) equals to 75.2 inches (in).
191 inches (in) equals to 485.1 centimeters (cm).

Temperature conversion

191° Fahrenheit (°F) equals to 88.3° Celsius (°C)
191° Celsius (°C) equals to 375.8° Fahrenheit (°F)

Power conversion

191 Horsepower (hp) equals to 140.46 kilowatts (kW)
191 kilowatts (kW) equals to 259.72 horsepower (hp)

Time conversion

(hours, minutes, seconds, days, weeks)
191 seconds equals to 3 minutes, 11 seconds
191 minutes equals to 3 hours, 11 minutes

Codes and images of the number 191

Number 191 morse code: .---- ----. .----
Sign language for number 191:
Sign language for number 191 Sign language for number 191 Sign language for number 191
Number 191 in braille:
Number 191 in braille
Images of the number
Image (1) of the numberImage (2) of the number
Number 191 black image Number 191 red image
More images, other sizes, codes and colors ...

Number 191 infographic

Year 191 AD

King Arnuwanda VI of Hatti died. He was succeeded by Hantili IV.

Gregorian, Hebrew, Islamic, Persian and Buddhist Year (Calendar)

Gregorian year 191 is Buddhist year 734.
Buddhist year 191 is Gregorian year 352 a. C.
Gregorian year 191 is Islamic year -444 or -443.
Islamic year 191 is Gregorian year 806 or 807.
Gregorian year 191 is Persian year -432 or -431.
Persian year 191 is Gregorian 812 or 813.
Gregorian year 191 is Hebrew year 3951 or 3952.
Hebrew year 191 is Gregorian year 3569 a. C.
The Buddhist calendar is used in Sri Lanka, Cambodia, Laos, Thailand, and Burma. The Persian calendar is the official calendar in Iran and Afghanistan.

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Advanced math operations

Is Prime?

The number 191 is a prime number. The closest prime numbers are 181, 193.
The 191st prime number in order is 1153.

Factorization and factors (dividers)

The prime factors of 191
Prime numbers have no prime factors smaller than themselves.
The factors of 191 are 1, 191.
Total factors 2.
Sum of factors 192 (1).

Prime factor tree

191 is a prime number.


The second power of 1912 is 36.481.
The third power of 1913 is 6.967.871.


The square root √191 is 13,820275.
The cube root of 3191 is 5,758965.


The natural logarithm of No. ln 191 = loge 191 = 5,252273.
The logarithm to base 10 of No. log10 191 = 2,281033.
The Napierian logarithm of No. log1/e 191 = -5,252273.

Trigonometric functions

The cosine of 191 is -0,803793.
The sine of 191 is 0,594909.
The tangent of 191 is -0,740126.

Number 191 in Computer Science

Code typeCode value
Port 191/TCP, UDPProspero Directory Service
Html¿ Inverted question mark ¿ ¿
(ISO-8859-1 Symbols)
Unix timeUnix time 191 is equal to Thursday Jan. 1, 1970, 12:03:11 a.m. GMT
IPv4, IPv6Number 191 internet address in dotted format v4, v6 ::bf
191 Decimal = 10111111 Binary
191 Decimal = 21002 Ternary
191 Decimal = 277 Octal
191 Decimal = BF Hexadecimal (0xbf hex)
191 BASE64MTkx
191 MD50aa1883c6411f7873cb83dacb17b0afc
191 SHA12fcc820fc1d95b1e8a3a219c7e3689bb8d65042c
191 SHA224ba2b4c39cb12a7905557e9774fe4a16abb0f0413ba43cf9e39531461
191 SHA25670260742c2952154c84e2ea9f68b1a7397f49b6d343da1ed284093c0bd72c742
191 SHA3847b5e059202f5228aee44dd34c6ca9a2c3bb7710f16564d1414b156533c57fa674d841cebdfa846a0e6e7c13b8615d7b9
More SHA codes related to the number 191 ...

If you know something interesting about the 191 number that you did not find on this page, do not hesitate to write us here.

Numerology 191

The meaning of the number 1 (one), numerology 1

Character frequency 1: 2

Number one (1) came to develop or balance creativity, independence, originality, self-reliance and confidence in the world. It reflects power, creative strength, quick mind, drive and ambition. It is the sign of individualistic and aggressive nature.
More about the the number 1 (one), numerology 1 ...

The meaning of the number 9 (nine), numerology 9

Character frequency 9: 1

The number 9 (nine) is the sign of ideals, Universal interest and the spirit of combat for humanitarian purposes. It symbolizes the inner Light, prioritizing ideals and dreams, experienced through emotions and intuition. It represents the ascension to a higher degree of consciousness and the ability to display love for others. He/she is creative, idealistic, original and caring.
More about the the number 9 (nine), numerology 9 ...

№ 191 in other languages

How to say or write the number one hundred and ninety-one in Spanish, German, French and other languages.
Spanish: 🔊 (número 191)

ciento noventa y uno

German: 🔊 (Nummer 191)


French: 🔊 (nombre 191)

cent quatre-vingt-onze

Portuguese: 🔊 (número 191)

cento e noventa e um

Hindi: 🔊 (संख्या 191)

एक सौ, इक्यानवे

Chinese: 🔊 (数 191)


Arabian: 🔊 (عدد 191)

مائة و واحد و تسعون

Czech: 🔊 (číslo 191)

sto devadesát jedna

Korean: 🔊 (번호 191)


Danish: 🔊 (nummer 191)

ethundrede og enoghalvfems

Hebrew: (מספר 191)

מאה תשעים ואחת

Dutch: 🔊 (nummer 191)


Japanese: 🔊 (数 191)


Indonesian: 🔊 (jumlah 191)

seratus sembilan puluh satu

Italian: 🔊 (numero 191)


Norwegian: 🔊 (nummer 191)

en hundre og nittien

Polish: 🔊 (liczba 191)

sto dziewięćdziesiąt jeden

Russian: 🔊 (номер 191)

сто девяносто один

Turkish: 🔊 (numara 191)


Thai: 🔊 (จำนวน 191)


Ukrainian: 🔊 (номер 191)

сто дев'яносто один

Vietnamese: 🔊 (con số 191)

một trăm chín mươi mốt

Other languages ...

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Frequently asked questions about the number 191

  • Is 191 prime and why?

    The number 191 is a prime number because its divisors are: 1, 191.

  • How do you write the number 191 in words?

    191 can be written as "one hundred and ninety-one".

Number 191 in News

NyTimes: Kenyan Cult Leader Is Charged With the Murder of 191 Children
When Paul Nthenge Mackenzie preached that the world was about to end, many of his believers starved themselves to death. He has now been charged along with 29 others.
Feb. 6, 2024
NyTimes: Kenyan Cult Leader Will Face 191 Charges of Child Murder
The authorities say Paul Nthenge Mackenzie told his followers to starve themselves and their children to death in the Shakahola Forest, where hundreds of bodies have been exhumed.
Jan. 17, 2024
BBC: England v India: Watch highlights as wickets tumble on see-saw opening day of fourth Test
Watch highlights of a see-saw first day of the fourth Test as India are bowled out for 191 before England close on 53-3 after losing in-form captain Joe Root for 21.
Sept. 2, 2021
BBC: England v India: Umesh Yadav caught behind to leave India 191 out
Ollie Robinson claims his third wicket as Umesh Yadav is caught behind to leave India 191 all out in a frenetic first innings of the fourth Test against England at The Oval.
Sept. 2, 2021

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