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September has 19 days that are prime numbers

Note: 1 is not prime or composite

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Q: How many days in September are prime numbers?

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

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

13

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.

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

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

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

13

10

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.

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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.

365

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

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.

There are 30 days in September. 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29 are prime. 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28 and 30 are composite. 1 is neither. The prime numbers have two factors. The composite numbers have more than two.

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