The last six digits of the number $30001^{18} $
I am familiar with the method of exponentiation by squaring. However, since I am only interested in the last 6 digits, it seems unnecessary to calculate the whole number.
Is there a method to do this effectively and preferably by hand? A detailed explanation would be great!
Rhinoceros
12
Answer
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Alessandro Iraci
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The answer is accepted.
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