Math Is Fun Forum

I'll look into that.  Good coin idea.  I might try it this winter but my results may vary more in the spring and summer when I get a higher arc.  I'm at 43 degrees north.   Looks like I'll have to wait a week or two to view this...

994 = 14 x 71
1008 = 14 x 72

952 = 14 x 68
966 = 14 x 69
980 = 14 x 70

127512 = 99 x 1288

1/285/871/792

1968 = 24 x 82 = (2 x 2 x 2 x 3) x 2 x 41
1992 = 24 x 83 = (2 x 2 x 2 x 3) x 83
2016 = 24 x 84 = (2 x 2 x 2 x 3) x 2 x 2 x 3 x 7
2040 = 24 x 85 = (2 x 2 x 2 x 3) x 5 x 17
2064 = 24 x 86 = (2 x 2 x 2 x 3) x 2 x 43

1704 = 24 x 71
1728 = 24 x 72
1752 = 24 x 73
1776 = 24 x 74
1800 = 24 x 75
1824 = 24 x 76
1848 = 24 x 77
1872 = 24 x 78
1896 = 24 x 79
1920 = 24 x 80
1944 = 24 x 81

25480 = 13 x 1960

1464 = 24 x 61
1488 = 24 x 62
1512 = 24 x 63
1536 = 24 x 64
1560 = 24 x 65
1584 = 24 x 66
1608 = 24 x 67
1632 = 24 x 68
1656 = 24 x 69
1680 = 24 x 70

984 = 24 x 41
1008 = 24 x 42
1032 = 24 x 43
1056 = 24 x 44
1080 = 24 x 45
1104 = 24 x 46
1128 = 24 x 47
1152 = 24 x 48
1176 = 24 x 49
1200 = 24 x 50

127116 = 99 x 1284

574 = 14 x 41
588 = 14 x 42
602 = 14 x 43
616 = 14 x 44
630 = 14 x 45
644 = 14 x 46
658 = 14 x 47
672 = 14 x 48
686 = 14 x 49
700 = 14 x 50

420 = 14 x 30
434 = 14 x 31
448 = 14 x 32
462 = 14 x 33
476 = 14 x 34
490 = 14 x 35
504 = 14 x 36
518 = 14 x 37
532 = 14 x 38
546 = 14 x 39
560 = 14 x 40