It is not known whether RP = co-RP, or whether RP is a subset of the intersection of NP and co-NP, though this would be implied by P = BPP.
我們還不知道是否RP = co-RP，抑或是否RP是NP和co-NP的交集的子集合，不過這些都可以由P = BPP這件事情推論出來。