This number is a composite.

+ 300^5+11 and 300^5-11 are both prime. Additionally, 300^5+11 is the next larger prime to 300^5 and 300^5-11 is the next smaller prime to 300^5. [Patterson]

+ The largest known natural number that is not the sum of a prime and a 3-almost prime. [Capelle]

(There are 2 curios for this number that have not yet been approved by an editor.)

Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell