The GCF is 128.
You need at least two numbers to find a GCF.
The positive integer factors of 1280 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280
Yes and 640/5 = 128
Choose a factor pair of 640 and then factor pairs of each resulting number that is not prime until you have reduced 640 to prime numbers.64010 x 642x5 x 8x8_ _ 2x4 2x4_ _ _ 2x2 _ 2x2So, the prime factorization of 640 is 2 x 5 x 2 x 2 x 2 x 2 x 2 x 2, which is 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 when reordered in numerical order. It can also be written in index form (in other words, using exponents) 27 x 5.
The factors of 640 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640.
The greatest common factor (GCF) of 640 and 256 is 128.
256 +384 = 640
256 = 0.40x Divide each side by 0.4 x = 640 Check it. 640 x .40 = 256 It checks.
You need at least two numbers to find a GCF.
16 cause the highest factor for both 128 and 640
640 320,2 160,2,2 80,2,2,2 40,2,2,2,2 20,2,2,2,2,2 10,2,2,2,2,2,2 5,2,2,2,2,2,2,2
640: Prime factorization: (2^7)(5) Every factor: 1,2,4,5,8,10,16,20,32,40,64,80,128,160,320,640
The GCF is 160.
The GCF is 320.
(160 × 8), (256 × 5), (320 × 4), (640 × 2)
64, 128, 192, 256, 320, 384, 448, 512, 576, 640, 704, . . .
0.0156