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863 (another Prime Pages' Curiosity) |
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Single Curio View: (Seek other curios for this number) sigma(863) = phi(prime(8)*prime(6)*prime(3)). It is the only known multidigit such prime (up to 2*10^8). [Firoozbakht]
Submitted: 2009-05-20 12:42:23; Last Modified: 2009-05-20 18:46:41.
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