Monday, December 23, 2019

970

https://docs.google.com/spreadsheets/d/1UVbyfow7GKrs-hnt9JnoPGhaLm2tGY1b0OB0UMuKQZ0/edit#gid=656459395
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Затъмненията през предишните 4 века са точно 969
During the period 1601 to 1700 there were 248 solar eclipses
During the period 1701 to 1800 there were 251 solar eclipses
During the period 1801 to 1900 there were 242 solar eclipses
During the period 1901 to 2000 there were 228 solar eclipses
During the period 2001 to 2019 there were 42 solar eclipses

During the period 1600 to 1600 there were 2 solar eclipses
During the period 1601 to 1618 there were 42 solar eclipses

248+251+242+228 = 969
2+248+251+242+228+42 = 1013

1020 = 2 × 2 × 3 × 5 × 17
1019 = PR#167
1018 = 2 × 509
1017 = 3 × 3 × 113
1016 = 2 × 2 × 2 × 127
1015 = 5 × 7 × 29
1014 = 2 × 3 × 13 × 13 (2, 3, 6, 13, 26, 39, 78, 169, 338, 507)
1013 = PR#166
1012 = 2 × 2 × 11 × 23
1011 = 3 × 337
1010 = 2 × 5 × 101
1009 = PR#165
1008 = 2 × 2 × 2 × 2 × 3 × 3 × 7
1007 = 19 × 53
1006 = 2 × 503
1005 = 3 × 5 × 67
1004 = 2 × 2 × 251
1003 = 17 × 59
1002 = 2 × 3 × 167
1001 = 7 × 11 × 13
1000 = 2 × 2 × 2 × 5 × 5 × 5
999 = 3 × 3 × 3 × 37
998 = 2 × 499
997 = PR#164
996 = 12 × 83
995 = 5 × 199
994 = 2 × 7 × 71
993 = 3 × 331
992 = 32 × 31
991 = PR#163
990 = 2 × 3 × 3 × 5 × 11
989 = 23 × 43
988 = 2 × 2 × 13 × 19
987 = 3 × 7 × 47
986 = 2 × 17 × 29
985 = 5 × 197
984 = 24 × 41
983 = PR#162
982 = 2 × 491
981 = 9 × 109
980 = 2 × 2 × 7 × 35
979 = 11 × 89
978 = 2 × 3 × 163
977 = PR#161
976 = 2 × 2 × 2 × 2 × 61
975 = 3 × 5 × 5 × 13
974 = 2 × 487
973 = 7 × 139
972 = 2 × 2 × 3 × 3 × 3 × 3 × 3
971 = PR#160
970 = 2 × 5 × 97
969 = 3 × 17 × 19

968 = 2 × 2 × 2 × 11 × 11
967 = PR#159
966 = 2 × 3 × 7 × 23
965 = 5 × 193
964 = 2 × 2 × 241
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1972 = 4 × 17 × 29
1975 = 5 ×   5 × 79, 
1976 = 8 × 13 × 19,
17748 = 4 × 17 × 29 × 3 × 3
17759 = 7 × 43 × 59,
1975,5 = 45 × 439. (PR#81)
1975,6 = 44 × 449. (PR#91)

1975,7 = 23 × 859. (PR#145)

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