43

This number is a prime.

Just showing those entries submitted by 'Beedassy': (Click here to show all)

+ The smallest nontrivial y for which the Pellian x2 - 1847*y2 = 1 is soluble. Note that 1847 is also prime. [Beedassy]

+ The number of distinct heptiamonds (i.e., triangular polyominoes with 7 cells), counted with reflections but not turning over. [Beedassy]

(There is one curio for this number that has not yet been approved by an editor.)

Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell