This number is a prime.

+ The California lottery announces results on TV at precisely 7:57 P.M. [Haga]

+ The Boeing 757 has the lowest operating cost per seat-mile of any single-aisle jetliner in its class and a lower cost per trip than any twin-aisle airplane.

+ The smallest palindromic prime that remains prime when its leading digit is replaced by any nonzero digit that is a power of two. [Russo]

+ The largest of three 3-digit palindromic primes that are not the sum of consecutive composite numbers. The other two are 313 and 383. [Loungrides]

+ Smallest multidigit palindromic prime of the form ceiling((n^2)/4). [Post]

+ There are 757 three-digit composite numbers. Their sum is a prime number. [Gaydos]

+ The smallest palindromic prime that is the sum of seven consecutive primes: {97 + 101 + 103 + 107 + 109 + 113 + 127}. [Jha]

(There are 14 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