Numbers 2:9, 16, 24

The total of the numbered men of the camp of Judah: 186,400, by their armies. They shall set out first.

The total of the numbered men of the camp of Reuben: 151,450 by their armies. And they shall set out second.

The total of the numbered men of the camp of Ephraim: 108,100, by their armies. And they shall set out third.