Tricki

a repository of mathematical know-how

#### B

#### C

#### I

#### P

#### T

- To establish that n is composite, show that Fermat's little theorem does not hold for n
- To factorize n, find a non-trivial square root of 1 mod n
- To find a factor of n, find some m such that (m,n) is not 1
- To find a rational with low denominator near a given real, use continued fractions
- To prove that a number is irrational, show that it is almost rational
- To work out powers mod n, use repeated squaring

9 weeks 5 daysago30 weeks 3 daysago2 years 1 weekago2 years 25 weeksago2 years 42 weeksago