"Source: Text/Group/GrpData.text";
"Line: 3212";
"Date: Thu Sep 25 14:47:45 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Group/GrpData.text, line: 3212
// Example: H73E20 ()
print "Example: H73E20";
ei := GetEchoInput();
SetEchoInput(true);
NumberOfIrreducibleMatrixGroups(4, 5);
assert $1 eq 647;
NumberOfSolubleIrreducibleMatrixGroups(4, 5);
assert $1 eq 509;
G := IrreducibleMatrixGroup(4, 5, 511);
ChiefFactors(G);
IsIrreducible(G);
assert $1;
IsAbsolutelyIrreducible(G);
assert not $1;
SetEchoInput(ei);
