19
This number is a prime.
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The smallest Loeschian prime of form x^2+x*y+y^2, where x,
y are successive primes, case (x=2, y=3), i.e.,
2^2+2*3+3^2=19. [Loungrides]
Submitted: 2020-01-22 16:15:07; Last Modified: 2020-01-31 14:55:40.
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