The prime numbers (factors) of 140 are: 2,5,7
45 factored into prime numbers is: 5 x 9 5 x 3 x 3
composite
There are 34 prime numbers under 140.
28 = 2x2x7
composite
22 x 5
The prime numbers between 130 and 140 are 131, 137, and 139.
All composite numbers can be expressed as unique products of prime numbers. This is known as a prime factorization.
No. 9 can be factored into 3 and 3, and 33 can be factored into 3 and 11.
Because any number with any proper factors is by definition not prime.
It is: 3*3*3 = 27