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The largest known example such that 41!+1 and 41#1 are both primes. [Gupta] The smallest nonpalindromic prime which on subtracting its reverse gives a perfect cube (i.e., 41  14 = 3^3). [Gupta] The smallest prime formed from reverse concatenation of two consecutive squares. [Gupta] The smallest prime of the smallest set of three consecutive multidigit primes, i.e., {41, 43, 47}, whose sum of digits (5, 7, 11) is another set of three distinct primes. [Gupta]
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