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# 100011710001211000133

This number is a prime.

1 0001171000 1211000133

100011710001211000133 is the smallest 21-digit prime formed with three successive 7-digit primes. Note that 7 divides 21. [Mortreuil]

100011710001211000133 is the sum of 9998764138^{2} and 190855217^{2}. [Finkelnberg]

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