
Curios:
Curios Search:
Participate: 
267 = (2)*phi(2)*sigma(2) + (6)*phi(6)*sigma(6) + (7)*phi(7)*sigma(7). Note that 267 is the only number with this property. [Firoozbakht]
(There are 2 curios for this number that have not yet been approved by an editor.)
Prime Curios! © 20002018 (all rights
reserved)
