Looking at the publication...
https://books.google.ca/books?id=S4DD-Z2pKrwC&pg=PA277The first number is consistant and is likely the area ( township?) grant number and the rest are the divisions ( sections?) within that area allotted to each grantee.
I see that Elisha Hopkins was a descendant of Stephen Hopkins of the Mayflower. I see that his wife Sarah Dolliver was also issued land, this surprises me for the day and age.
Excerpt from another publication linked below...
After several ineffectual attempts at settlement, a grant of a township was made Dec. 4, 1767, to 84 heads of families, mostly from Cape Cod and Nantucket.
I have not a copy of the old grant, but I might as well here give the names of all who appear in the division of the grant, according to our township "Record of First Division of Main Lands begun January 7, 1768:"
https://archive.org/stream/doanereunionatba00trur#page/n35/mode/2up