Swap twin prime pairs of form (4*k+3,4*(k+1)+1) in prime factorization of n. 1, 2, 5, 4, 3, 10, 7, 8, 25, 6, 13, 20, 11, 14, 15, 16, 17, 50, 19, 12, 35, 26, 23, 40, 9, 22
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