167
This number is a prime.
Just showing those entries submitted by 'Caldwell': (Click here to show all)
It is conjectured that every positive integer may be
written as the sum of seven nonnegative cubes except these
seventeen: {15, 22, 23, 50, 114, 167, 175, 186, 212, 231,
238, 239, 303, 364, 420, 428, 454}. This conjecture has
been tested to 1034 and proven for numbers
divisible by four. [Caldwell]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell