102345
102345 is the smallest [positive] 6-digit number with no repeats.
102
123456.
1023456789
1234567
Because -99 is a two digit number and it is smaller.10 is the smallest positive 2-digit number.Because -99 is a two digit number and it is smaller.10 is the smallest positive 2-digit number.Because -99 is a two digit number and it is smaller.10 is the smallest positive 2-digit number.Because -99 is a two digit number and it is smaller.10 is the smallest positive 2-digit number.
Since there are only five different digits, a 6-digit number can only be generated if a digit can be repeated. If digits can be repeated, the smallest 6-digit number is 111111.
The smallest negative one digit number is -9, and the smallest positive one digit number is either 0 or 1, I'm not sure about the positive.
The smallest 7 digit number is -9,999,999. The smallest positive number is 1,000,000.
0123456789
10234567
1,234,567