This number is a prime.
Anyone born on the emirp time 10:47:23 on January 21st will celebrate his first 3.141592 (or π) anniversary (i.e., after 3 years, 1 month, 3 weeks) on March 14th (Pi Day) at 3.141592 (π) o'clock (or 3:08:30). [Beedassy]
(There is one curio for this number that has not yet been approved by an editor.)
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