Pattern Recognition - 137

Find out the next two numbers in the series.

517, 2021 ,8025 , 32029 , _ , _ , ......................

Answer

517, 2021 ,8025 , 32029 , _ , _ , ......................

5 ,     20 ,   80 ,   320 , .........  Next two numbers 1280 , 5120

    *4      *4     *4

17 ,  21 ,   25 ,   29 , ........... Next two numbers  33, 37 

    +4    +4     +4

Next two numbers in the series  1280 33 , 512037

517, 2021 ,8025 , 32029 ,128033 , 512037 ,...........................