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There are typically 30 or 31 days in a month, and prime numbers are integers greater than 1 that have no divisors other than 1 and themselves. The prime numbers less than or equal to 31 are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, and 31. Therefore, there are 11 Prime number days in a month with 31 days, and 10 prime number days in a month with 30 days.

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3mo ago

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That depends on the month and whether or not it is a leap year but the prime numbers from 2 to 31 are: 2 3 5 7 11 13 17 19 23 29 and 31

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Wiki User

12y ago
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12 days for a month with 30 days,13 days for a month with 31 days and 11 days for a month with 28 days

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Q: How many prime number days are in a month?
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