Each of these numbers goes evenly into 133: 1, 7, 19, 133.
1, 7, 19, 133.
There is no common prime factor for 133 and 1000 and so the only number that goes into both is 1.
7
1 and 19
133 is the HCF
1, 7, 19, 133
1, 7, 19, 133.
133 is a composite number.
19 / 133 = 0.142857143
133 is CXXXIII
No. 133 = 7 * 19, so it is not prime.