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179 (number)

From Wikipedia, the free encyclopedia
Natural number
← 178179 180 →
Cardinalone hundred seventy-nine
Ordinal179th
(one hundred seventy-ninth)
Factorizationprime
Prime41st
Divisors1, 179
Greek numeralΡΟΘ´
Roman numeralCLXXIX,clxxix
Binary101100112
Ternary201223
Senary4556
Octal2638
Duodecimal12B12
HexadecimalB316

179 (one hundred [and] seventy-nine) is thenatural number following178 and preceding180.

In mathematics

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179 is part of theCunningham chain ofprime numbers 89, 179, 359, 719, 1439, 2879, in which each successive number is two times the previous number, plus one. Among Cunningham chains of this length, this one has the smallest numbers. Because 179 is neither the start nor the end of this chain, it is both asafe prime and aSophie Germain prime.[1] It is also a super-prime number, because it is the 41st smallest prime and 41 is also prime. Since 971 (the digits of 179 reversed) is prime, 179 is anemirp.

See also

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References

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  1. ^Wells, David (1997).The Penguin Dictionary of Curious and Interesting Numbers. Penguin. p. 115.ISBN 9780140261493.

External links

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