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189941761 (another Prime Pages' Curiosity) |
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Single Curio View: (Seek other curios for this number) If n = 0, 1, 2 or 3, then 1458752724480*n + 189941761 is a base-7 pseudoprime. Note that 189941761 and 1458752724480*3 + 189941761 are Carmichael numbers. [Wesolowski]
Submitted: 2009-10-06 11:42:07; Last Modified: 2009-10-06 14:13:23.
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