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The nth Prime Page will now find any of the first 2.623˙10^{15} primes or
π(x) for x up to 10^{17}. 122 squared minus each of its prime factors squared is also prime. [Sladcik] 122 is the smallest sum of two nonconsecutive factorials of distinct primes (2! + 5!). [Gevisier] The smallest dihedral semiprime in which all four associated semiprimes are distinct. Note that it contains the smallest dihedral semiprime (22) and also the smallest dihedral prime (2). [Capelle]
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