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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) The largest 4digit lefttruncatable prime (emirp). It is also the largest fourdigit deletable emirp. Deleting one digit at a time, we take a prime at each step, i.e., 967, 97, 7. Note that 967, 97 are also emirps. [Loungrides]
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