11 groups of order 2780.
| SmallGroups | group |
|---|---|
| (2780, 1) | C4×C5×C139 #14583987 |
| (2780, 2) | Dic5×C139 #14583988 |
| (2780, 3) | C5×Dic139 #14583989 |
| (2780, 4) | Dic695 #14583990 |
| (2780, 5) | C22×C5×C139 #14583991 |
| (2780, 6) | AGL(1,𝔽5)×C139 #14583992 |
| (2780, 7) | C139⋊AGL(1,𝔽5) #14583993 |
| (2780, 8) | D5×D139 #14583994 |
| (2780, 9) | C2×D695 #14583995 |
| (2780, 10) | C2×D5×C139 #14583996 |
| (2780, 11) | C2×C5×D139 #14583997 |