The following table summarizes the 2-level default designs and the base designs for designs in which you specify generators for additional factors. Table cells with entries show available run/factor combinations. The first entry in a cell is the resolution of the unblocked design. The lower number in a cell is the maximum number of blocks you can use.
| Number of factors | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of runs | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 
| 4 | full 2 | III 1 | ||||||||||||
| 8 | full 4 | IV 4 | III 2 | III 2 | III 1 | |||||||||
| 16 | full 8 | V 8 | IV 8 | IV 8 | IV 8 | III 4 | III 4 | III 4 | III 4 | III 2 | III 2 | III 1 | ||
| 32 | full 16 | VI 16 | IV 8 | IV 8 | IV 8 | IV 8 | IV 8 | IV 8 | IV 8 | IV 8 | IV 8 | |||
| 64 | full 32 | VII 16 | V 16 | IV 16 | IV 16 | IV 16 | IV 16 | IV 16 | IV 16 | IV 16 | ||||
| 128 | full 64 | VIII 32 | VI 16 | V 16 | V 16 | IV 16 | IV 16 | IV 16 | IV 16 | |||||