Finite Group DatabasebetaFinite Group DatabasebetaValid at every prime. The subgroup lattice of this shape is one object: each count below is a polynomial in p, and substituting a prime gives the lattice of that group.
| Order | p4 |
| Subgroups | 4p2 + 3p + 5 |
| Classes of subgroups | 7 |
| Automorphisms | p10 − 2p9 + 2p7 − p6 |
| Classes with a complement | 4 |
Each circle is one class of subgroups, labeled by the exponents of its shape — 3,2 is Cp3 × Cp2, and 2²,1 is (Cp2)2 × Cp. The badge is how many subgroups the class holds. Hover a row of the table to light its circle, or click a circle to jump to its row.
| Subgroup | Quotient | Subgroups |
|---|---|---|
| Cp (direct factor) | Cp2 × Cp | p2 + p |
| Cp (characteristic) | (Cp)3 | 1 |
| Cp2 (direct factor) | (Cp)2 | p2 |
| (Cp)2 (direct factor) | Cp2 | p2 |
| (Cp)2 | (Cp)2 | p + 1 |
| Cp2 × Cp (direct factor) | Cp | p2 + p |
| (Cp)3 (characteristic) | Cp | 1 |