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400 : 2 = 200

200 : 2 = 100

100 : 2 = 50

50 : 2 = 25

25 : 5 = 5

5 : 5 = 1

400 = 2 · 2 · 2 · 2 · 5 · 5

Answer: 6 prime factors. 2 different prime factors.

Answer:

Answer: 6 prime factors. 2 different prime factors.

Step-by-step explanation:

400 : 2 = 200

200 : 2 = 100

100 : 2 = 50

50 : 2 = 25

25 : 5 = 5

5 : 5 = 1

400 = 2 · 2 · 2 · 2 · 5 · 5