Triangle Of The Gods

November 10, 2015

The nth element of the Smarandache consecutive number sequence (A007908) is the sequence of the numbers from 1 to n concatenated in order:

1, 12, 123, 1234, 12345, 123456, 1234567, 12345678, 123456789, 12345678910, 1234567891011, 123456789101112, …

The sequence is sometimes called the “Triangle of the Gods,” and the story goes that anyone who can specify the smallest prime number in the sequence is admitted to heaven.

Your task is to find the smallest prime number in the sequence. When you are finished, you are welcome to read or run a suggested solution, or to post your own solution or discuss the exercise in the comments below.

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