188
This number is a composite.
The largest known even number that can be expressed as the sum of two (distinct) primes in exactly five ways. [Capelle]
π(Look-and-Say (188)) = 188. [Honaker]
(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