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Fermilab has a Deep Underground Lab looking for dark matter. It is 2341 feet underground. [McCranie]
The only prime containing the first four digits formed from two doubledigit primes. [Silva] The only prime consisting of four distinct consecutive digits that can be represented as the sum of consecutive palindromic primes, i.e., 757+787+797 = 2341. [Loungrides] Concatenate (righttoleft) the 2nd, 3rd, 4th and 1st prime and you will get another prime of the same digital length containing all of the prime digits, i.e., 2753. [Loungrides] The largest prime derangement of {1, 2, 3, 4}. (A derangement is a permutation in which none of the objects appear in their ordered place.) [Loungrides]
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