A shard of smooth bone etched with irregular marks dating back 20,000 years puzzled archaeologists until they noticed something unique – the etchings, lines like tally marks, may have represented ...
A supercomputer has something for the record books. A computer has found the largest known prime number. It's 22 million digits long. Great Internet Mersenne Prime Search — -- Here's one for the ...
Is 170,141,183,460,469,231,731,687,303,715,884,105,727 prime? Before you ask the Internet for an answer, can you consider how you might answer that question without a ...
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