Best Answer

1 is special

2 prime

3 prime

4 composite

5 prime

6 composite

7 prime

8 composite

9 composite

10 composite

11 prime

12 composite

ext.

Q: Which numbers are prime numbers and which are composite numbers from 1 to 100?

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9

2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,and 97 are all prime numbers. The rest are composite

Look for a table of prime numbers. All the odd numbers that are NOT on this list are composite numbers.

They are the numbers that have more than two factors whereas prime numbers have only two factors and that 1 is not considered to be a composite or a prime number

primes are 1,2,3,5,7,11,13,17,19,23,29,31,41,43,47,53,59,61,67,71,73,79,83,89,91. all others are composites.

Related questions

There are 25 prime numbers and 75 composite numbers from 1 to a 100. A prime number has only two factors whereas a composite number has more than two factors.

finding the prime factors of a composite number

9

101

The factors of 100 are 1, 2, 4, 5, 10, 20, 25, 50, 100 2 and 5 are prime. 1 is neither. The rest are composite.

2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,and 97 are all prime numbers. The rest are composite

Look for a table of prime numbers. All the odd numbers that are NOT on this list are composite numbers.

So we eliminate prime numbers. Note that the number 1 is neither prime nor composite. We have left:4689101214151618202122242526272830323334353638394042444546484950515254555657586062636465666869707274757677788081828485868788909192939495969899100

It is: 25*75 = 1875

They are the numbers that have more than two factors whereas prime numbers have only two factors and that 1 is not considered to be a composite or a prime number

primes are 1,2,3,5,7,11,13,17,19,23,29,31,41,43,47,53,59,61,67,71,73,79,83,89,91. all others are composites.

Look up a table of prime numbers. All those numbers that are not prime, are composite - except 1, which is neither prime nor composite.