List questions from primality-test

Published on 27 Mar 2019 - 23:52

41

Views

Is there a prime number $p$ such that : $p\bmod n =1 $ for $n <10$? and if yes , Are there infinity of them?

Published on 29 Mar 2019 - 12:59

174

Views

How could factordb apply the p-1-method on this number?

Published on 15 Apr 2019 - 14:24

492

Views

Primality test for numbers of the form $N=k \cdot 3^n-1$

Published on 23 Mar 2026 - 9:53

110

Views

Should you use Euler's generalization of fermat's little theorem for primality testing?

Published on 23 Apr 2019 - 13:36

503

Views

Primality test for numbers of the form $N=4 \cdot 3^n-1$

Published on 22 Mar 2026 - 21:45

451

Views

Primality test for numbers of the form $N=4 \cdot 3^n+1$

Published on 23 Mar 2026 - 12:32

73

Views

Is there an infinity of $k \in \mathbb{N}$ s.t. $2 {k \choose k/2} - 1$ is prime?

Published on 29 May 2019 - 9:15

788

Views

Formula to find number of divisors of a number

Published on 25 Mar 2026 - 13:56

234

Views

How to do Lucas Probabilistic Primality Test

Published on 26 Mar 2026 - 2:47

903

Views

Counterexample to the primality test

Published on 18 Jun 2019 - 13:08

40

Views

Finding the mistake in a proof of pseudo-primality

Published on 25 Mar 2026 - 12:54

42

Views

A congruence involving generalized Lucas polynomials

Published on 10 Jul 2019 - 9:32

444

Views

Can my Home PC Handle the Lucas-Lehmer Test by Itself? (or Do I Need GIMPS)

Published on 20 Mar 2026 - 4:09

284

Views

What is the best way to test primality of this number $123456789101112131415161718192021222324252627282931$ for high school level?

Published on 16 Jul 2019 - 18:30

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Help me to understand statistical testing

Is there a prime number $p$ such that : $p\bmod n =1 $ for $n <10$? and if yes , Are there infinity of them?

How could factordb apply the p-1-method on this number?

Primality test for numbers of the form $N=k \cdot 3^n-1$

Should you use Euler's generalization of fermat's little theorem for primality testing?

Primality test for numbers of the form $N=4 \cdot 3^n-1$

Primality test for numbers of the form $N=4 \cdot 3^n+1$

Is there an infinity of $k \in \mathbb{N}$ s.t. $2 {k \choose k/2} - 1$ is prime?

Formula to find number of divisors of a number

How to do Lucas Probabilistic Primality Test

Counterexample to the primality test

Finding the mistake in a proof of pseudo-primality

A congruence involving generalized Lucas polynomials

Can my Home PC Handle the Lucas-Lehmer Test by Itself? (or Do I Need GIMPS)

What is the best way to test primality of this number $123456789101112131415161718192021222324252627282931$ for high school level?

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