Find The Next Number 12, 13, 15, 17, 111, 113, 117, 119, 123, ?

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Test your skills with numbers with this numerical riddle.

Find The Next Number in the following series;

12, 13, 15, 17, 111, 113, 117, 119, 123, ?

Find next number in the sequence

So were you able to solve the riddle? Leave your answers in the comment section below.

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Answer:

These are the first 10 prime numbers (2, 3, 5…) prefixed with a 1.

Therefore, answer = 129.

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