Floor[Log[10,Table[((20!*3^20)/((20*3)^Mod[n+1,2](3)(2)))((30!*2^30)/((2)(2)))^Mod[n,2](60!/2)^Floor[(n-2)/2](60!/2)^Floor[((n-2)/2)^2](5^12)^Mod[n,2],{n,11,11}][[1]]]]

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