11
3 x 47
1155 is composite.
As a product of its prime factors: 3*5*7*11 = 1155
2 x 2 x 13 = 52
289 = 17 x 17
prime numbers that divide into 1155 = 3, 5, 7, 11
prime factorization of 1155: 3 x 5 x 7 x 11
As a product of its prime factors: 3*5*7*11 = 1155
2 x 2 x 2 x 3
Use a factor tree. 172 86, 2 43,2,2
composite
No