This number is a prime.

Just showing those entries submitted by 'Leonardis': (Click here to show all)

+ The first case of a prime such that removing respectively the last and first digit one obtains two consecutive perfect squares: 28²=784 and 29²=841. Moreover, notice that 28 and 29 are the possible number of days in the month of February, and 28 is a perfect number while 29 is another prime. [Leonardis]

(There is one curio for this number that has not yet been approved by an editor.)

Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell