The seven senators who opposed the deal of the century—all of them Federalists—objected to Jefferson's exercise of executive authority in the absence of any specific constitutional authorization. Delaware senator Samuel White warned further that relocating settlers two or three thousand miles away from the capital might alienate their affections for the Union.
I did some research and the lowest range was 1,000,000 and the highest was 1,700,000. Its hard to estimate this because they didnt have the proper recording instruments we have today.
They just move from island to island