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Just showing those entries submitted by 'Somer': (Click here to show all) A prime number formed by concatenating the three smallest doubledigit primes (11, 13, 17) in order. Note that if you concatenate the 11th prime, the 13th prime, and the 17th prime, in order, you'll get another prime (one whose digits begin a wellknown mathematical constant). [Somer]
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