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例子
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项a(1)的素因式分解。。a(12)为:
2
3, 5
3, 5, 17
3, 5, 17, 23
5, 7, 13, 17, 19
5, 7, 13, 17, 19, 23
5, 7, 13, 17, 19, 23, 37
5, 7, 13, 17, 19, 23, 37, 59
5, 7, 13, 17, 19, 23, 37, 59, 67
5, 7, 13, 17, 19, 23, 37, 59, 67, 73
7, 11, 13, 17, 19, 31, 37, 41, 47, 59, 61
7, 11, 13, 17, 19, 31, 37, 41, 47, 59, 61, 73
146965=5*7*13*17*19是循环的。因为它是有5个素数的最小例子,146965=a(5)。它不是a(4)=3*5*17*23的倍数-杰佩·斯蒂格·尼尔森2021年5月22日
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