# 229 (number) - in Mathematics

In Mathematics

229 is a regular prime, a long prime, a twin prime (with 227), a cousin prime, and a sexy prime. 229 is also a prime triplet (with 227 and 233).

In base 10, the smallest prime that, when added to the reversal of its digits, yields another prime is 229, since 229 + 922 = 1151 (sequence A061783 in OEIS).

There exist 229 different projective configurations of type (123123), in which twelve points and twelve lines meet with three lines through each of the points and three points on each of the lines.

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### Famous quotes containing the word mathematics:

Mathematics alone make us feel the limits of our intelligence. For we can always suppose in the case of an experiment that it is inexplicable because we don’t happen to have all the data. In mathematics we have all the data ... and yet we don’t understand. We always come back to the contemplation of our human wretchedness. What force is in relation to our will, the impenetrable opacity of mathematics is in relation to our intelligence.
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In mathematics he was greater
Than Tycho Brahe, or Erra Pater:
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The clock doth strike, by algebra.
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