Composite Numbers

There r 5 composite #

1331 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.

not prime, since it is divideable by 5, and 31.

From that list, 49 and 57 are composite 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

A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. A number cannot be both.

They are: 8+9+10+12+14+15+16+18 = 102

Both are composite numbers

139 is a prime number. It is only evenly divisible by itself and one.

Example:

22 = 4,

3*5 = 15

and 7*11 = 77

In 1741 Christian Goldbach conjectured that every even number could be written as a sum of two primes. [At the time 1 was considered a prime and so 2 = 1 + 1.] The conjecture has not been proven so there may be even numbers which cannot be so written. Also every number which is greater than 5 and is one fewer than a multiple of 6 cannot be so written.

190 is not prime

It is composite.

51 is a composite number 3 x 17 = 51

7,387

295 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.

composite

97

It is composite because it has more than two factors

composite

6487 is not prime. 6487 = 13 * 499

It is the identity element of multiplication. That puts it in a special category.

25 and 36

It is composite.