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(just those submitted by Gupta)
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+ The smallest untouchable number which is a cube. [Gupta]

+ The smallest and only known cube sandwiched between two triplets of semiprimes (i.e., 213=3*71, 214=2*107, 215=5*43 and 217=7*31, 218=2*109, 219=3*73). [Gupta]

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