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The smallest emirp that contains all of the straight digits
only. [Gupta]
The smallest 4digit prime equal to the number of monosubstituted alkanes C(n1)H(2n1)X with n1 carbon atoms that are not stereoisomers. [Russo] The first emirp p equal to the sum of the n first strong primes (n=17). Note that n and p are strong emirps. [Loungrides]
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