64079 (number)

64079 (number)

64079 is the twenty-third Lucas number and is thus often written as "L23". It is significant for being the first Lucas number "Ln" where "n" is prime that is itself not prime. In a closely related property, 64079 is the smallest extra strong Lucas pseudoprime to base 2.

Its smaller prime factor, 139, can be written in the form 6"n"+1, where "n" is the index of the Lucas number. The larger factor, 461, can similarly be written in the form 20"n"+1.

Other uses

64079 is the zip code of Platte City and Tracy, Missouri.


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