Largest product in a gridProblem 11

In the 2020 grid below, four numbers along a diagonal line have been marked in red.

08 02 22 97 38 15 0040 00 75 04 05 07 7852 12 50 77 91 08

49 49 99 40 17 81 1857 60 87 17 40 98 4369 48 04 56 62 00

81 49 31 73 55 79 1429 93 71 40 67 53 8830 03 49 13 36 65

52 70 95 23 04 60 1142 69 24 68 56 01 3256 71 37 02 36 91

22 31 16 71 51 67 6389 41 92 36 54 22 4040 28 66 33 13 80

24 47 32 60 99 03 4502 44 75 33 53 78 3684 20 35 17 12 50

32 98 81 28 64 23 67102638 40 67 59 54 70 6618 38 64 70

67 26 20 68 02 62 1220 956394 39 63 08 40 91 6649 94 21

24 55 58 05 66 73 9926 97 177878 96 83 14 88 34 8963 72

21 36 23 09 75 00 7644 20 45 351400 61 33 97 34 31 33 95

78 17 53 28 22 75 3167 15 94 03 80 04 6216 14 09 53 56 92

16 39 05 42 96 35 3147 55 58 88 24 00 1754 24 36 29 85 57

86 56 00 48 35 71 8907 05 44 44 37 44 6021 58 51 54 17 58

19 80 81 68 05 94 4769 28 73 92 13 86 5217 77 04 89 55 40

04 52 08 83 97 35 9916 07 97 57 32 16 2626 79 33 27 98 66

88 36 68 87 57 62 2072 03 46 33 67 46 5512 32 63 93 53 69

04 42 16 73 38 25 3911 24 94 72 18 08 4629 32 40 62 76 36

20 69 36 41 72 30 2388 34 62 99 69 82 6759 85 74 04 36 16

20 73 35 29 78 31 9001 74 31 49 71 48 8681 16 23 57 05 54

01 70 54 71 83 51 5469 16 92 33 48 61 4352 01 89 19 67 48

The product of these numbers is 26 63 78 14 =1788696.

What is the greatest product of four adjacent numbers in the same direction (up, down, left, right, or diagonally) in the 2020 grid?