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Bunuel
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Aditi31
Gmt123
1. 75 - 5,3
2. 120 - 2,3,5
3. 144 - 2,3
4. 210 - 2,3,5,7
5. 750 - 2,3,5

210 has 4 prime factors

Posted from my mobile device

I got confused about whether the question is asking about greatest distinct prime factors or greatest prime factors in general( in count or including the recurring primes). It would be helpful if you could share some light on this.

suppose 2 occur twice first time it will be prime 2^1 .
2nd time it multiple of 2 (2^2 =4 ) which is not prime number
hope it helps
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