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A109744 Least multiple of n such that every partial concatenation followed by a 7 is prime. +0
2
1, 2, 3, 4, 5, 12, 42, 48, 9, 90, 22, 96, 299, 154, 60, 288, 918, 1026, 380, 60, 2184, 616, 23, 120, 175, 2964, 135, 980, 319, 1230, 2015, 2464, 1056, 272, 2310, 2448, 111, 11628, 2301, 8800, 7134, 252, 4730, 3036, 1665, 3634, 1551, 2016, 147, 4950 (list; graph; listen)
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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.


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