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1973 (another Prime Pages' Curiosity) |
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times on that day (and possibly the next). (caldwell@utm.edu) N. J. A. Sloane's A Handbook of Integer Sequences was first published by Academic Press in 1973. The smallest prime formed by using all possible end digits of multidigit primes, i.e., 1, 3, 7, and 9. [Gupta] The gas "crisis" of 1973 is prime. 1973 is the year Picasso died. [Stroup] This is the least prime $p$ which becomes composite if we add or subtract any power of 2 less than $p/2$. (The next few are 3181, 3967, 4889, 8363, 8923, ...) [TT08]. [Caldwell]
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