有没有这样一个质数,去掉一位后也是质数,再去掉一位后又是质数,直到只剩一位数还是质数? 知乎 Template




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tomski有没有这样一个质数,去掉一位后也是质数,再去掉一位后又是质数,直到只剩一位数还是质数? 知乎 coloring