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Search: id:A152396
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| A152396 |
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43 is prime; 109 and 10987 are prime; 1000999, 1000999998997 and 1000999998997996995994993 are prime; ... In general a(n) is the first number which yields n primes through the concatenation of the fewest possible of the numbers decremented sequentially from the original. |
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