22222...22299 (19153-digits)
This number is a probable-prime (likely to be a prime but we have not (re-)proven it on this site).
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The largest minimal 4k+3 prime, i.e., a prime of the
form 4k+3 such that deleting any number of its
digits never gives another prime of the form 4k+3. [Rupinski]
Submitted: 2006-05-23 17:55:13; Last Modified: 2008-01-30 17:28:00.
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