The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, 36
A factor of 1000
Since all numbers have one as a factor, there is no number with three as its only factor.
1024
1024
The greatest possible 'length' comes from the number with the greatest number of prime factors. The greatest number of factors is created by using the smallest prime number, 2, as a factor as many times as possible. Since 2^9=512 and 2^10=1024, the greatest possible 'length' of a positive integer less than 1000 is 9.
The positive integer whose square is between 900 and 1000 is 31. 312 = 961.
The greatest common factor (GCF) is: 5
10
There is no common prime factor for 133 and 1000 and so the only number that goes into both is 1.
The two-digit factors of 100 and 1000 are all composite.
The GCF is 5.
1024