As a product of its prime factors: 3*5*7*11 = 1155
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3 x 5 x 7 x 11 = 1155
The factors of 1155 = 1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 385, and 1155. The prime factors of 1155 are 3, 5, 7, 11.
1155, 3x5x7x11=1155.
1155 is a composite number because it has more than two factors.
1155 ends with 5, which means it is divisible by 5. It is a composite number because it has factors in addition to 1 and itself.