9 and 99
99 + 9 = 108
The largest one digit number that has three factors is 9. Its factors are 1, 3, and 9.
The largest single digit composite number is 9. The largest prime number is 17 million digits long. The definition of a composite number is any number that has at least one positive divisor other than one or the number itself (it is not a prime number). The largest composite digit is therefore longer than the largest prime number by at leaf +1.
How about 97
Unless this is a trick question 9995 would be the largest 4 digit number with 5 as one of its digits
It is 9999 (if a one is added, it becomes a five digit number: 9999 + 1 = 10,000)
It is: 8
There can only be one largest two-digit prime number.
You could say -9 or 0 for the smallest, depending on whether you want to include negative numbers or not. 9 would be the largest one digit number.
It is 97.
Largest three digit number is 999 and we see that it is odd. One less than that is 998 and it is even and it is also three digits. No other 3 digit number is larger than 998 while being even.
As a string, the largest number is 7111111.