Has the same relation to E as BPP does to P.

EE = BPE if and only if EXP = BPP [IKW01].

Equals DTIME(2^{2^O(n)}) (though some authors alternatively define it as being equal to DTIME(2^O(2ⁿ))).

EE = BPE if and only if EXP = BPP [IKW01].

Contained in EEXP and NEE.

Equals DTIME(2^{2^{2^O(n)}}).

In contrast to the case of EE, it is not known whether EEE = BPEE implies EE = BPE [IKW01].