It is their lowest common multiple which is 221 13 and 17 are both prime numbers
Quite a few. However the most obvious is 17*22 = 374.
1 and 17 (17 is a prime number).
17 is prime and 68 is 17 times 4, so the number that can go into 17 and 68 is 17.
1 and 19
1 and 17.
The number is 133.
Themselves and their multiples because 17 and 13 are both prime numbers.
285, 570, 855 +285 . . .
It is their lowest common multiple which is 221 13 and 17 are both prime numbers
Quite a few. However the most obvious is 17*22 = 374.
136, 272, 408, 544, 680 +136 . . .
no go for it
1 and 17 (17 is a prime number).
17 is prime and 68 is 17 times 4, so the number that can go into 17 and 68 is 17.
1 and 19.
divide both by 3 57/60 = 19/20 cannot go lower as 19 is a prime number