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This number is a prime.
4200 0000000000 0000000000 0000000000 0000000043
Single Curio View: (Seek other curios for this number)A prime number that begins with 42, ends with 43, and has a length of 44 digits. This is also the only known prime of the form n * 10n + n + 1. [Earls]
Submitted: 2005-09-05 10:35:27; Last Modified: 2008-08-01 07:46:56.
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