2310
This number is a composite.
2310 = 2 x 3 x 5 x 7 x 11 = 112 + 132 + 172 + 192 + 232 + 292. [Trotter]
This number, 11 primorial, is one of the rare primorials to fall in the middle of twin primes. In this case 2309 and 2311. Two other primorials with this property are 6 and 30. [Wagler]
The largest primorial with all digits distinct: 0, 1, 2 and 3. [Necula]
(There is one curio for this number that has not yet been approved by an editor.)
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell