Non-composite numbers in the eastern ray of the Ulam spiral as oriented on the March 1964 cover of Scientific American.
1, 2, 11, 53, 127, 233, 541, 743, 977, 1871, 3511, 4001, 4523, 5077, 9851, 11503
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Wed Mar 3 22:28:19 CET 2010 [seqfan] Comment on YouTube prime spiral video