In Mathematics
- An odd number
- The smallest number that can't be represented as a sum of fewer than 19 fourth powers
- A strictly non-palindromic number
- The 22nd prime number (the next is 83)
- The smallest prime number p for which the real quadratic field Q has class number greater than 1 (namely 3)
- A cousin prime with 83
- An emirp, because the reverse of 79, 97, is also a prime
- A fortunate prime
- A prime number that is also a Gaussian prime (since it is of the form )
- A happy prime
- A Higgs prime
- A Kynea prime
- A lucky prime
- A permutable prime, with ninety-seven
- A Pillai prime, because 23! + 1 is divisible by 79, but 79 is not one more than a multiple of 23
- A regular prime
- A prime in a residue classes 4n+3, 8n+7, and 10n+9
- A right-truncatable prime, because when the last digit (9) is removed, the remaining number (7) is still prime
- A sexy prime (with 73)
- The n value of the Wagstaff prime 201487636602438195784363
Read more about this topic: 79 (number)
Famous quotes containing the word mathematics:
“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)
“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)