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# 11111...99999 (38-digits)

This number is a prime.

11111119 9999999999 9999999999 9999999999

Single Curio View: (Seek other curios for this number)

The fifth (the fourth being 1111111999999, an emirp) of an
infinite sequence of primes formed by right-concatenating
further instances of an identical terminating digit 9 to
11111119 the near-rep-digit twin prime of 11111117. In this
case the prime differs by only a SINGLE additional
identical digit from the sixth prime so formed, i.e.
111111199999999999999999999999999999999. [Harrison]
Submitted: 2020-02-09 16:47:27; Last Modified: 2020-02-09 19:01:30.

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