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.     : [2] 1, 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 73, 83, 127, 137, 163, 179, 181, 269, 601.

: [3] 71, 12071.

: [4] 47, 59, 61, 67, 89, 197, 227, 233, 263, 593, 643, 3167, 4373, 22273.

- . ' : 1, 2, 3, 5, 7. 11, 13: ' : - " - " (11 x 7 = 77); ' : - " " (13 x 10= 130). . , . 13 , 269: ' : - " - - " (269 x 3 = 807). [5] , , ?

, , 12 ( ),4 . , (' :): " " (643), ( :): " " (4,373 x 10= 43,730). [6]

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, -40 . 54 ( ) : ( 51), 40 .

: http://www.etzion.org.il/dk/1to899/mishcan2.gif



[1] " " . ". 1900 -1600 ", : http://en.wikipedia.org/wiki/History_

of_mathematics .

[2] ( ): :: " - - " (31); :: " -- " (19); : " - " (83); :: " - " (179); :: " - " (73); , - : " ... - " (17, 23); :: " -- " (37); :: " - " (601); :: " - - " (43); : : " " (29); :: " - " (41); :: " " (127); :: " " (137).

[3] :: " " (71); :: " - - " (12,071).

[4] , :: " " (593); :: " " (59); : " " (89); :: " - - -" (233); :: " - - " (47); :: " - " (197); : " - - " (22,273); :: " " (263); :: " " (227); :: " - " (3,167); :: " ' " (61); :: " - ' - " (67).

[5] 269 59. , 13 17, 816 ( -807) -17.

[6] , 67, " : " - ' - " (67) ( 4 ). " - " (), 40 -40 .