Feature #11578: Add a method to check if a number is probably prime or composite (Patch included)

• Status: Rejected
• Assignee: matz (Yukihiro Matsumoto)
• Target version: -

[chaitanyav (NagaChaitanya Vellanki)]

Added a method to check if a given n is probably prime or composite using Miller- Rabin Test. This method is faster that the sieve method to check for an arbitrary n. Please review my pull request.

https://github.com/ruby/ruby/pull/1051

[chaitanyav (NagaChaitanya Vellanki)]

• File 0001-Add-Prime.probably_prime.patch 0001-Add-Prime.probably_prime.patch added

[chaitanyav (NagaChaitanya Vellanki)]

• Subject changed from add a method to check if a number is probably prime or composite to Add a method to check if a number is probably prime or composite (Patch included)
• Assignee set to chaitanyav (NagaChaitanya Vellanki)

[chaitanyav (NagaChaitanya Vellanki)]

• Assignee changed from chaitanyav (NagaChaitanya Vellanki) to matz (Yukihiro Matsumoto)

[naruse (Yui NARUSE)]

• Status changed from Open to Rejected

Use OpenSSL::BN.

[chaitanyav (NagaChaitanya Vellanki)]

Yui NARUSE wrote:

Use OpenSSL::BN.

Rehearsal ---------------------------------------------------------------
Probably prime 11.990000 0.060000 12.050000 ( 12.054223)
OpenSSL::BN.prime_fasttest? 0.020000 0.000000 0.020000 ( 0.024519)
----------------------------------------------------- total: 12.070000sec

                              user     system      total        real

Probably prime 12.090000 0.050000 12.140000 ( 12.147566)
OpenSSL::BN.prime_fasttest? 0.020000 0.000000 0.020000 ( 0.021217)

Thanks for closing.

[chaitanyav (NagaChaitanya Vellanki)]

NagaChaitanya Vellanki wrote:

Yui NARUSE wrote:

Use OpenSSL::BN.

Rehearsal ---------------------------------------------------------------
Probably prime 11.990000 0.060000 12.050000 ( 12.054223)
OpenSSL::BN.prime_fasttest? 0.020000 0.000000 0.020000 ( 0.024519)
----------------------------------------------------- total: 12.070000sec

user system total real
Probably prime 12.090000 0.050000 12.140000 ( 12.147566)
OpenSSL::BN.prime_fasttest? 0.020000 0.000000 0.020000 ( 0.021217)

Thanks for closing.