All matter is made of atoms. Atoms are the smallest particle of matter. They are so small that you cannot see them with your eyes or even with a standard microscope. A standard sheet of paper is about a million atoms thick.
Answer Wiki. The int type is a 4-byte signed integer. There are also tinyint (1 byte), smallint (2 bytes), and bigint (8 bytes), and unsigned versions of all of these. As Apostolos mentioned, the docs for all the numeric types are here: http://dev.mysql.com/doc/refman/...
In reality, it's not. 2,147,483,647 is the largest number that an int type can hold. This is because Java uses a 32-bit signed integer value for ints. Since it's signed, one bit needs to hold the sign value, leaving us 31 bits for storage. 231 = 2,147,483,648, which is the total number of values which can be held in 31 bits.