Cannot specify numInitialChunks > 8192

db.adminCommand({ shardCollection: 'test.user2', key:

, numInitialChunks: 8193 });
{
"collectionsharded" : "test.user2",
"code" : 13333,
"ok" : 0,
"errmsg" : "exception: can't split a chunk in that many parts"
}