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Anonymous
53, 3, 3
47, 7, 5
43, 11, 5
41, 13, 5
37, 17, 5
31, 23, 5
29, 17, 13
23, 19, 17
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13 + 17 + 29 = 59
19+59 = 78
59, 5 and 3
They are 17, 19 and 23.
only 59 is prime. rest are composite numbers