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The hull number of Cape Keltic in the Hallmark Hall of Fame movie Calm at Sunset. [Haga]
The mouth of a prime volcano. It is the smallest prime that remains prime when preceded and followed by one, two, three, or four 9's: 1579 915799 99157999 9991579999 999915799999[Post] The largest prime that consists of odd digits concatenated in ascending order. [Loungrides] The smallest 4digit prime, with distinct digits, whose alternating the two internal digits another prime is created, (1759), concatenated from two doubledigit primes. [Loungrides]
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