9999876
7 is.
7 The next prime after 7 is 11.
1234567
The largest single digit prime number is 7.
9999998
The greatest 7-digit number is 99,99,999. The smallest 6-digit number is 1,00,000. Their difference is 99,99,999-1,00,000 = 98,99,999. The predecessor of 98,99,999 is the number that comes just before it, and it is 98,99,998.
999998 maybe?
The greatest three digit number that is divisible by 7 is 994.
The difference is 90000000
9999999
9999876
9876543
The "7" digit had the greatest value because it is in the UNITS column.
greatest number9999987
7
7 * 142 = 994