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Since 62 is a composite number and not prime you can check for divisibility by 31 and 2. To check for divisibility by 31 take the last digit of your number and multiply it by four, then add the result to your original number, deleting the last number

ex. 624 to test would be 62 + (4*4) = 78

you continue in this fashion until a multiple of 31 and 2 are found. If they are not than it is not a multiple of 62

sources: I am a human calculator, experience

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15y ago

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