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This number is a prime.
130841*2^24242-1 is prime. This is the first prime at the Prime Curios! site to have between 7000 and 7999 digits. Note that 24242 is a smoothly undulating number. Also, when you sum the squares of the digits of 130841*2^24242-1 you get the prime 206879. [Earls]
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