Migration complete - please let us know if anything isn't working.
This number is a composite.
Just showing those entries submitted by 'Gaydos': (Click here to show all)
121, 143, 169, and 187 are the first and possibly only four consecutive brilliant numbers whose reverses are also brilliant numbers. [Gaydos]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell