The largest prime number that has 4 digits and begins with a 1 is 1,999.
its 9.999...
998 - 3 digits even number Next even number is 1000 - 4 digits. So 998 is the largest ...
Unless this is a trick question 9995 would be the largest 4 digit number with 5 as one of its digits
4 x 578 = 2312 8 x 754 = 6032
8998
9876
The largest would be... 7634
This number is 9 999.Or maybe 9999 .
9876 (:
Reordering the digits, the largest is 87542.
9999876