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# 🏆 Challenge! Dare to solve it!🏆

Given a no. & you have to find its Zno.(e.g no. is 328)Divide the number with its lowest divisor other than 1(here 2), the number left after dividing the number with its lowest divisor, the number say X is obtained(here 164).Then this no. is further divided by its lowest divisor and the process will go on till the no. left is prime no.(here 41)Then all the lowest factors and the no. left are combined to form a no., which is then reversed to get a no.Y(here 14222).HCF of orignal no. and Y gives Zno.(here 2).

8 Answers

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Key for help:
=> No. means number.
=> Znumber or Zno. is a imaginary name.
=>HCF (or GCD) means highest common divisor. It gives the highest no. which is factor of both orignal numbers.
=>Let me give you another example:
Let the orignal no. be 555.
Its lowest divisor is 3.
555/3=185
185/5=37
The no. after combining = 3537
Y=7353
Hcf of 7353 and 555 is 3.
i.e Zno.=3
[Actually Challenge is not much hard, So, try to solve it]

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Hi @Lakshay,
I think that I copied your profile's image, so if you want that I change it, please tell me to do this ;) Sorry for my English

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Ok. Thank for your answer 😊😊😊

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I've solved it, my python solution:
https://code.sololearn.com/cvE25dJxaEYA/?ref=app

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https://code.sololearn.com/c20S80Vmi7q7/?ref=app

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No need to change. That's ok.