557 is a prime number because it factors are: 1 and 557
1, 3, 9, 73, 219, 657
657 is a composite number.
9907 + 657 = 10564
997
65789+657=66446.
703
989 + 657 = 1646
557 is a prime.
557 = DLVII
557.0
657 ft = 657 x 12 inch number of necklaces = 657 x 12/22 = 358 necklaces