Prime Curios!: 122

122
(another Prime Pages' Curiosity)

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122 squared minus each of its prime factors squared is also prime. [Sladcik]

122 is the smallest sum of two non-consecutive 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]