Prime Curios!: 3797

3797
(another Prime Pages' Curiosity)

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According to the 16th century prophet Nostradamus, the Earth will survive until A.D. 3797. [Skinner]

3797 is the only four-digit prime, in which: i.The first digit and the last digit are primes. (3,7) ii.The first two-digit number, the second two-digit number and the third two-digit number are primes. (37,79,97) iii.The first and the last three-digit numbers are primes. (379,797) [Sreechakra]

The center of a 7-by-7 magic square of primes which stays a magic square (but with 7 primes) if the units digits of all entries are removed (i.e., 9341 becomes 934, ...). [Madachy]

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