It is a number grid that only contains prime numbers.
I am assuming you are referring to a normal 3x3 sudoku grid, where you can only use the numbers 1-9 once in the grid, and by prime number you mean the 3digit number across and down the grid must be prime? For a number to be prime, it must end in 1, 3, 7 or 9. There are 5 places on the Sudoku grid for a number to finish and as you can only use a number once in sudoku you have one place left where the number can not be prime. This means the most you can have is 5 prime numbers.
area distance shape direction scale
Numbers with more than two factors are not prime numbers
The answer depends on which numbers are in the grid!
The global grid helps me see where the prime merdian is
The Equator and Prime Meridian
north and south :)
zero longitude
Both, the prime meridain is a vertical line that circles the Earth
No
The lines on a global grid that run from pole to pole are called meridians of longitude. The prime meridian, which passes through Greenwich, London, is the most well-known and has a longitude of 0 degrees. The meridian at 180 degrees, opposite the prime meridian, is called the International Date Line.
It is a number grid that only contains prime numbers.
The global grid helps me see where the prime merdian is
The definition of global grid is a grid that covers the whole Earth.
Locations
quotidian