The largest one digit number that has three factors is 9. Its factors are 1, 3, and 9.
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It is 9999 (if a one is added, it becomes a five digit number: 9999 + 1 = 10,000)
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.
4 : with factors 1, 2 and 4
Two versions of this question have been merged ... the one that asks forthe smallest 5-digit number, and the one that asks for the largest.If we're talking integers (whole numbers), then-- the largest 5-digit number with no repeating digits is 98,765 .-- the smallest one is 10,234 .-- If decimals are included, then the largest number is the same,but the smallest one is .01234 .
A double digit number, triple digit number........