That depends what number you started with.
the three prime numbers that equal 17 are _+_+_=17
the three prime numbers that equal 17 are _+_+_=17
no prime numbers except for 7 can be divided by 7 that the point of prime numbers, they cant be divided by anything but them self and one.
56 does not have only three prime factors.
55 does not have 3 prime factors.
Yes it can be divided by 1,7 and 8
2, 3 and 5 are the prime numbers that equal 30.
1,3,4
three prime numbers equal 116:2 + 5 + 1092 + 7 + 1072 + 11 + 1032 + 13 + 1012 + 17 + 97
2, 7 and 23
163, 3, 2
5, 11, 19.