Its numerological importance is also quite profound, as 13 times 1001 is 13013, and both 13 and 1001 are important numbers in numerology. 13 is associated with bad luck by the Conspiracy's numerologists but only brings bad luck to Pinks while bringing good luck to SubGenii). 13 is closely tied to the Luck Plane, and in fact it is is anathema to NHGH the God of Bad Luck.
1001 is historically significant for 1001 Arabian Nights, a collection of stories written by the Mad Arab Abdul Alhazred prior to writing the Necronomicon. 1001 is one of the numbers closely tied to the Elder God Cthulhu.
The significance of 13013, however, is its close connection to J. R. "Bob" Dobbs, Slack, and the Church of the SubGenius, and through the numerology of 13 and 1001, it shows the connections "Bob" has to the Luck Plane and the Elder Gods. Members fervently celebrated the Centennial Day of the "Bob", January 30, 2013 (1/30/13).