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The chap in the fighter jet is Prince William, during his ongoing military training; the photo from last year, again courtesy BBC.
From wiki:
Two hundred [and] ninety-two 292 = 22·73, noncototient, untouchable number. The continued fraction representation of pi is [3; 7, 15, 1, 292, 1, 1, 1, 2...]; the convergent obtained by truncating before the surprisingly large term 292 yields the excellent rational approximation 355/113 to pi, repdigit in base 8 (444).
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cheers
see also pi in the sky.
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