BLOB (binary large object) 1) In computers, a BLOB (binary large object), pronounced BLAHB and sometimes spelled in all lower case, is a large file, typically an image or sound file, that must be handled (for example, uploaded, downloaded, or stored in a database) in a special way because of its size.
1 You can also find it in the U.S. Bank routing number chart below.  Your account number (usually 10-12 digits) is specific to your personal account. It's the second set of numbers printed on the bottom of your checks, just to the right of the bank routing number. You can also find your account number on your monthly statement.
Do not mistake the routing number for the checking account number. The checking account number is printed to the right of the routing number on the lower-middle edge of the check. The checking account number does not include the special three-dot symbol. Chase Bank has 25 different routing numbers, each of which is assigned to a specific region of the country. If there isn't a blank check on hand, look up routing numbers by region at chase.com.