Pattern Recognition - 152

Find out the next two numbers in the series.
86371 , 74855, 63541, _ ,_ ,.........................

Answer

86371 ,  74855,  63541, _ ,_ ,.........................

86371

63=(8 *8) -1

71=(8*9) -1

74855

48=(7 *7) -1

55=(7*8) -1

63541

35=(6 *6) -1

41=(6*7) -1

Next two numbers  

 5  (5*5)-1   (5*6)-1 = 52429

4  (4*4)-1   (4*5)-1 =  41519

86371 , 74855, 63541,52429 ,41519 ,.........................