goldendragon1971

Sunday, February 5, 2017

From 0 - 9.....................................the 1st ten numbers...............there are four primes................2, 3, 5, 7..............................40% not 25 % as I put yesterday...............there are 25 primes in the 1st hundred numbers...........................from 0 to 100.................25%..............25 out of 100 is 25 %................4 out of 10 is not 25 % but 40 %................................sorry for the confusion..............4/10 would be the percentage................simplified to 2/5.....................40 %.............

0.4

When a number has more than two factors it is called a composite number. Here are the first few prime numbers: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, etc.

Math Forum: Ask Dr. Math FAQ: Prime Numbers

mathforum.org/dr.math/faq/faq.prime.num.html

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Prime number - Wikipedia

https://en.wikipedia.org/wiki/Prime_number

A prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself. A natural number greater than 1 that is not a prime number is called a composite number.

‎List of prime numbers · ‎Composite · ‎Fundamental theorem · ‎AKS primality test

Math Forum: Ask Dr. Math FAQ: Prime Numbers

mathforum.org/dr.math/faq/faq.prime.num.html

When a number has more than two factors it is called a composite number. Here are the first few prime numbers: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, etc.