What is the Smallest 6-Digit Number?

To build the smallest possible number of any digit length, you must use the smallest possible digits available in mathematics: 0 and 1.

However, a number cannot start with '0' (because 0123 is just a 3-digit number, 123). Therefore, the very first digit on the far left must be the smallest non-zero digit, which is 1. Every single place value after that should be filled with the absolute smallest digit, which is 0.

For a 6-digit number:

1. First digit: 1
2. Next 5 digits: 00000 Result: 100000.

How you read this number depends on which numbering system you are using:

• In the Indian Number System: Commas are placed as 1,00,000. In words, it is read as One Lakh.
• In the International Number System: Commas are placed as 100,000. In words, it is read as One Hundred Thousand.

This number holds a special place in the number line:

• It is exactly 1 unit larger than the greatest 5-digit number (99,999 + 1 = 100,000).
• If you subtract 1 from it, it drops down to a 5-digit number.
• The greatest 6-digit number, by contrast, is formed entirely of nines: 999,999.