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A082720 Plateau and depression primes of the general form a*(10^m-1)/9 +/- b*(10^[ m-1 ]+1) exist for digit lengths a(n). +0
23
3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 29, 31, 33, 37, 41, 49, 53, 55, 59, 61, 65, 67, 69, 73, 75, 83, 85, 87, 93, 95, 97, 101, 103, 105, 111, 113, 115, 117, 121, 127, 129, 141, 157, 161, 171, 193, 201, 205, 209, 231, 247, 291, 323, 343, 351, 353, 361, 367, 401 (list; graph; listen)
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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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