Set $B = \{55, 57, 58, 59, 61\}.$  Which number in set B has the smallest prime factor?
Question:
Set $B = \{55, 57, 58, 59, 61\}.$  Which number in set B has the smallest prime factor?
Answer:
Let's think step by step.

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Set $B = \{55, 57, 58, 59, 61\}.$  Which number in set B has the smallest prime factor?
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