This number is a prime.

+ The first seven digits of the decimal expansion of the reciprocal of seven. [Glenn]

+ If you follow the order of the integers charted out in the Enneagram (an ancient system of personality classification from Persia) beginning with the number 1, the sequence is 1428571. [Gawryn]

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