Common factors of 100 and 1,000 are: 1, 2, 4, 5, 10, 20, 25, 50, and 100.
The two-digit factors of 100 and 1000 are all composite.
There are 25 prime numbers between 1 and 100, all of them can be factors.
545
4, 9, 25, and 49 are all of the numbers between 1 and 100 having 3 factors.
The factors of 1,000 are: 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000.
There are 125 of them.
105add 7repeatuntil you reach 994
1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000
I did it by listing all of the factors of all the numbers from 1 to 100. 60, 72, 84, 90 and 96 each have twelve factors.
the only factors of 180 greater than 50 but least than 100 is 60 and 90 =)
1001
101