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A001265 Table T(n,k) in which n-th row lists prime factors of 2^n - 1 (n >= 2), with repetition. +0
5
0, 1, 3, 7, 3, 5, 31, 3, 3, 7, 127, 3, 5, 17, 7, 73, 3, 11, 31, 23, 89, 3, 3, 5, 7, 13, 8191, 3, 43, 127, 7, 31, 151, 3, 5, 17, 257, 131071, 3, 3, 3, 7, 19, 73, 524287, 3, 5, 5, 11, 31, 41, 7, 7, 127, 337, 3, 23, 89, 683, 47, 178481, 3, 3, 5, 7, 13, 17, 241 (list; table; graph; listen)
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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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