The McLaughlin group is a sporadic finite simple group of order equal to $898128000$.  It was discovered in 1969 by Jack McLaughlin as a group of automorphisms of the McLaughlin graph.

The McLaughlinGroup() command returns a permutation group isomorphic to the McLaughlin group.

In the Standard Worksheet interface, you can insert this group into a document or worksheet by using the Group Constructors palette.

$\mathrm{with}\left(\mathrm{GroupTheory}\right)\:$

$G≔\mathrm{McLaughlinGroup}\left(\right)$

$G≔McL$

$\mathrm{Degree}\left(G\right)$

$275$

$\mathrm{GroupOrder}\left(G\right)$

$898128000$

$\mathrm{IsSimple}\left(G\right)$

$\mathrm{true}$

The GroupTheory[McLaughlinGroup] command was introduced in Maple 17.

For more information on Maple 17 changes, see Updates in Maple 17.