39
39, since it can be divided by 3 (39/3=13).
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.
4 is a composite number (2 x 2), and it is less than 5.
6
999999
39
39, since it can be divided by 3 (39/3=13).
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.
4 is a composite number (2 x 2), and it is less than 5.
99 is the largest composite number less than 100: its prime factorisation is 3 x 3 x 11
6
598
398?
899.
999999
33, 63 and 93
The answer is 9001