119 (number)
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Mathematics
- 119 is a Perrin number, preceded in the sequence by 51, 68, 90 (it is the sum of the first two mentioned).[1]
- 119 is the sum of five consecutive primes (17 + 19 + 23 + 29 + 31).
- 119 is a highly cototient number.[2]
- 119 is the order of the largest cyclic subgroups of the Monster group.[3]
- 119 is the smallest composite number that is 1 less than a factorial (120 is 5!).
- 119 is a biprime, and the third in the {7.q} family.
Telephony
- 1-1-9 is an emergency telephone number in some countries
- A number to report children / youth at risk in France[4]
119 is the emergency number in Afghanistan that belongs to police and interior ministry.
Other
- 119 is the default port for unencrypted NNTP connections.
- Project 119 is a governmental program of the People's Republic of China targeting sports that China has not traditionally excelled in at the Summer Olympics, to maximize the amount of medals won during the games.
- 119 is also the atomic number of the theoretical element Ununennium.
See also
References
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- ↑ J. H. Conway et al.: Atlas of Finite Groups. Clarendon Press, Oxford, 1985. ISBN 0-19-853199-0 (Page 223)
- ↑ Descriptive website
