3
489 divided by 51 is 9.59 or 9 with remainder 30.
17
155/3 = 51 2/3
LCM(3, 17, 51) = 51
68
The GCF/HCF of 17 and 51 is 17.
17
51 ÷ 17 = 3
1, 3, 17, 51
1, 3, 17 and 51 are the factors of 51.
17 = 3
No, 51 is not prime. 51's factors are 1, 3, 17, and 51. 17*3=51.