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Old 2019-04-15, 08:57   #1
Mar 2018

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Default Prime 19 is the smallest prime...

19 (a twin) is the smallest prime such that between it and the closest square surrounding it (16) there is a prime 17.
Another example is 41...between 41 and 36 there is 37. (36 is the closest square surrounding 41, being 7^2 further away than 6^2).

89 is the first non twin prime with this property, any Others?

Last fiddled with by enzocreti on 2019-04-15 at 09:18
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