**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 (12_{3}12_{3}), in which twelve points and twelve lines meet with three lines through each of the points and three points on each of the lines.

Read more about this topic: 229 (number)

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**In Mathematics**

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**In Mathematics**

... Mabkhout (1993) proved that every number x4 + 1, for x > 3, has a prime factor greater than or equal to 137 ... Størmer's theorem is an important part of his proof, in which he reduces the problem to the solution of 128 Pell equations ...

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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.”

—Simone Weil (1909–1943)

“In *mathematics* he was greater

Than Tycho Brahe, or Erra Pater:

For he, by geometric scale,

Could take the size of pots of ale;

Resolve, by sines and tangents straight,

If bread and butter wanted weight;

And wisely tell what hour o’ th’ day

The clock doth strike, by algebra.”

—Samuel Butler (1612–1680)