1259

This number is a prime.

Just showing those entries submitted by 'Beedassy': (Click here to show all)

+ The smallest emirp using the end digits of each prime digit raised to a positive nonprime power: 21 = 2, 36 = 729, 51 = 5, 74 = 2401. [Beedassy]

+ There are exactly 1259 noncrossing golygons of length thirty-two. [Beedassy]

+ The largest concatenate emirp abcd from Ramanujan's classic paper that included a list of fifty-four quaternary (ax2 + by2 + cz2 + du2) "diagonal" quadratic forms representing all integers. [Beedassy]

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