No: 105 and 128 are both composite numbers because they have more than two factors
128 64,2 32,2,2 16,2,2,2 8,2,2,2,2 4,2,2,2,2,2 2,2,2,2,2,2,2
128 = 27. You can find out this sort of things quickly if you take the trouble to divide the number into prime factors.
The positive integer factors of 2176 are: 1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 128, 136, 272, 544, 1088, 2176 The prime factors of 2176 are: 2, 17
(Prime factors in bold):1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200.
The factors of 128 are: 1, 2, 4, 8, 16, 32, 64, and 128.The only prime factor of 128 is ' 2 '.
The factors of 128 are: 1, 2, 4, 8, 16, 32, 64, and 128.The only prime factor of 128 is ' 2 '.
Just 2.
128 64,2 32,2,2 16,2,2,2 8,2,2,2,2 4,2,2,2,2,2 2,2,2,2,2,2,2
As a product of its prime factors in exponents: 2^7 = 128
The only prime factor of 128 is 2 because 2 x 2 x 2 x 2 x 2 x 2 x 2 = 128
128 / \ 2 64 / \ 2 32 / \ 2 16 / \ 2 8 / \ 2 4 / \ 2 2 / \ 2 1
The only common prime factor is 2.
128 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.
Its prime factor is 2 and as a product of its prime factor 2 to the power of 7 = 128
No: 105 and 128 are both composite numbers because they have more than two factors
128 and 65 have no common factor other than 1. 2 is the only prime factor of 128. 5 and 13 are the prime factors of 65. 128 times 65 equals 1,320.