1. 두 쌍둥이 소수 p 와 p+2 의 합이 12의 배수임을 증명하세요. (단, p는 3 초과이며, 두 수 다 정수입니다.)
2. 두 정수 p와 p+3 이 둘다 소수인 경우는 p가 2일 때 밖에 없음을 증명하세요.
학원 교재의 문제를 변형했습니다.
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