7 11 13 17 19.
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7 + 13 = 20 Note that there are no two prime numbers x and y that multiply to 20.
They are: 2+7+11 = 20
The prime numbers between 1 and 20 are 2, 3, 5, 7, 11, 13, 17, and 19.
The prime numbers between 0 and 20 are: 2, 3, 5, 7, 11, 13, 17 and 19
it is seven(7)these are 23,29,31,37,41,43,47