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Reconstruct the multiplication:

                               
       * * * * * *         where:  O C T O
               * *                   C T O
      -------------                  C T O B
       * * * * * *                     T O
     * * * * * *                       T O B E
    ---------------                    T O B E R
     O C T O B E R                       O B E R
                                           B E R
                                           B E
                                             E R
                                               R
                           are 11 prime numbers.
(No Solution Yet, 0 Comments) Submitted on 2024-05-03 by K Sengupta    

Determine the greatest common divisor of the numbers p6-7p2+6 where p runs through the prime numbers p≥11.
(No Solution Yet, 3 Comments) Submitted on 2024-05-03 by Danish Ahmed Khan    

Let N be a positive integer with an even number of decimal digits, say abcd...yz.

For how many N does a^b + c^d + ... + y^z? equal zy...dcba, that is, N with its digits reversed? One example is N=52, since 5^2 = 25.

[If 00 occurs, take its value as 1. Do not include any solutions ending with 00.]

(No Solution Yet, 1 Comments) Submitted on 2024-05-02 by K Sengupta    

I have searched in an extensive English dictionary to find a matching word, describing a possible cooperation between two prominent politicians:

BIDEN+TRUMP= ???

I have found two reasonable answers.

Can you find them (or more)?

(No Solution Yet, 4 Comments) Submitted on 2024-05-02 by Ady TZIDON    

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