11698...96889 (80-digits)

This number is a prime.

1169889610
1111181609 6196898088 1888890691 6986100111 1116911881 1961600961 1966996889

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The concatenation of the first 25 multidigit strobogrammatic numbers is a prime number. [Gupta]

Submitted: 2019-10-23 11:39:56; Last Modified: 2020-06-13 13:00:05.