583333246
This number is a composite.
Just showing those entries submitted by 'Sariyar': (Click here to show all)
The smallest triangular number that is sphenic as well as its reversal, i.e., 583333246 = 2*8539*34157 and 642333385 = 5*3331*38567. [Sariyar]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell