Prime numbers are positive integers that can only be divided by themselves and one.

质数是只能被其自身和1整除的正整数。

They asked patients to score the degree of discomfort or distress caused by their diagnostic test on an 0-6 integer scale.

他们让病人们在0至6的整数级别上给由他们的诊断性测试造成的不适和痛苦程度打分。 。