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Fermat primality test
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Computer science
Theoretical computer science
Computational complexity theory
Primality testing
2026-10-06
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The Fermat
test
looks for
a
coprime
base
a
with
a
N
−
1
≡
1
(
mod
N
)
. Such
a
witness proves compositeness by the
Fermat little theorem
, but
Carmichael numbers
pass for every
coprime
base.
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(5)
Primality testing
Computational complexity theory
Theoretical computer science
Computer science
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Past exam of the mathematics course of the University of Cambridge
/
2006
/
ii
/
Paper 4
/
11H
/
b
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2015
/
ii
/
Paper 4
/
9H
/
iii
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2015
/
ii
/
Paper 4
/
9H
/
iv
/
Solution
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Fermat primality test
by
Wikipedia Bot
1
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The
Fermat primality test
is
a
probabilistic method
used to determine whether
a
number
is prime.
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