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September has 19 days that are prime numbers

Note: 1 is not prime or composite

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Peter Yan

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โˆ™ 2021-10-07 00:33:33
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โˆ™ 2015-10-13 23:16:49

10 of them.

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Q: How many days in September are prime numbers?
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How many days are in September have a prime number date and how many have composite number dates how do you know?

September has 19 days that are prime numbers Note: 1 is not prime or composite


How many days in September have prime number date How many have a compisite number date?

September has thirty days. Of the numbers 1-30, the following are prime: 2,3,5,7,11,13,17,19,23,29. The others are composite, except 1 which is neither! So, 10 primes, 19 composites, and 1


How many prime numbers in September?

13


How many days are in September are prime number days?

10


How many days in September have a prime number date?

10


How many prime numbers between 1 and 8888888888888888888888888888888888888888888888?

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How many days in September have a prime number and how many have composite number dates how do you know?

2 3 5 7 11 13 17 19 23 29 are prime. The rest (except 1) are composite. Prime numbers have two factors; composite numbers have more than two.


Are there infinitely many natural numbers that are not prime?

This can be an extension to the proof that there are infinitely many prime numbers. If there are infinitely many prime numbers, then there are also infinitely many PRODUCTS of prime numbers. Those numbers that are the product of 2 or more prime numbers are not prime numbers.


On a prime day the month and the day are both prime numbers so how many days will occur in the year 2009?

365


How many prime days are in a year?

they are 120 because there is 10 prime numbers in each month 1,3,5,7,11,13,17,19,23,29 and 12 months


What are the prime numbers starting from 1?

There are infinitely many prime numbers and therefore they cannot be listed.There are infinitely many prime numbers and therefore they cannot be listed.There are infinitely many prime numbers and therefore they cannot be listed.There are infinitely many prime numbers and therefore they cannot be listed.


How many known prime numbers are there?

There are infinite prime numbers as there is infinite numbers. You cannot limit the counting of primes.

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