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The smallest prime of the first prime quadruple for which the sums of the cubes of the digits of the four primes (821, 823, 827, 829) are primes themselves (521, 547, 863, 1249). [Trotter]
The smallest prime whose reversal is a seventh power (128 = 27). [Gupta]
6! + 5! - 4! + 3! - 2! + 1!. [Lownsdale]
The smallest of the prime quadruplet which is the largest
of the three 3-digit prime quadruplets (101, 103, 107,
109}, {191, 193, 197, 199} and {821, 823, 827, 829} has, as
digital reversal, the number of 6-digit prime quadruplets
(128). [Post]
A prime formed from the first two composite Fibonacci
numbers (8,21). [Silva]
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