33107
This number is a prime.
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A prime formed by simply right-concatenating the exponent
of Mersenne prime M11 to the number of digits of the same
Mersenne prime. M11 is the sixth-largest known Mersenne
prime to exhibit this property. (Note also that the
opposite right-concatenation, i.e. 10733 is also prime). [Harrison]
Submitted: 2020-04-12 18:42:03; Last Modified: 2026-05-27 11:43:46.
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