14689...63839 (49-digits)

This number is a prime.

                       146891012 1415161820 2122242526 2728303233 3435363839

Just showing those entries submitted by 'Gupta': (Click here to show all)

The smallest prime in the Smarandache concatenated nonprime sequence: 1, 14, 146, 1468, ... . [Gupta and Poo Sung]