R Observatory: Metrics for primes version 1.6.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

primes

1.6.1Package record

Fast Functions for Prime Numbers

3packages depend

16.1Kdownloads / year

90.1%test coverage

13/13flavors OK

Overview

About

Maintained by Paul EgelerCRAN page ↗GitHub ↗Issues ↗

Fast functions for dealing with prime numbers, such as testing whether a number is prime and generating a sequence prime numbers. Additional functions include finding prime factors and Ruth-Aaron pairs, finding next and previous prime numbers in the series, finding or estimating the nth prime, estimating the number of primes less than or equal to an arbitrary number, computing primorials, prime k-tuples (e.g., twin primes), finding the greatest common divisor and smallest (least) common multiple, testing whether two numbers are coprime, and computing Euler's totient function. Most functions are vectorized for speed and convenience.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("primes", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("ironholds/primes")

Development version from ironholds/primes. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-primes

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-primes

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-primes

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 3.1 min · r-devel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK14 OK2026-04-22
ERROR13 OK, 1 ERROR2026-04-18
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.6.1

READMEYes · 174 wordsVignettesNoNEWSNoCitation fileNo

Help pages: 12
Examples that run: 100%8 run in a plain check
Exported functions with examples: 73%
Documented parameters: 91%
Return-value docs: 91%
Help pages citing references: 17%

How these are measured

Downloads

16.1K

CRAN downloads in the past year

Rank #2,998 · ~44/day · ~1.3K/mo

Releases R versions

Daily download trend is not available in this view yet.

1.4K30 days

4.5K90 days

16.1K1 year

Compare downloads with other packages →

Also on395 r2u8 autocran99 c2d4u

How downloads are counted

Repository

ironholds/primes ↗Account: Ironholds

10Stars

2Forks

1Open issues

1Open PRs

0Releases

88Commits

4Commit identities

88 commits · Last activity 2024-01-16 · 0% stars, 30d · The default branch showed an older version (1.6.0) than CRAN on 2026-10-11

Responsiveness

How these are sampled

PRs merged (all time): 100%
Median days to close, 50 most recently updated closed issues: 20
Median days to close, 50 most recently updated closed PRs: 6

Stars over time

2024-12-18 · 102026-07-07 · 10

How these are measured

PracticesBeta

9 development-tooling and community-health practices detected across 7 families in the upstream repository

Checks run against github.com/ironholds/primes on 2026-10-11.

Continuous integration (3)

GitHub ActionsTravis CI (config file)AppVeyor

Governance and community (1)

Code of conduct

Docs source (1)

pkgdown

Reproducibility and dev environment (1)

data-raw/

Show all practicesHide 3 practices

CRAN release process (1)

cran-comments.md

Lint, format, editor (1)

RStudio project

Git structural (1)

.gitattributes

How this is detected·Detection ruleset v3 (2026-09-26)

Dependencies

Declared dependencies

3 external dependencies (excludes base and recommended)

Installing primes adds 1 package (1 with compiled code, 1.8 MB of source tarballs). Heaviest: Rcpp 1.8 MB.

Depends (1)

R >= 4.0

Imports (1)

Rcpp

LinkingTo (1)

Rcpp

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

3direct

0indirect

Imports 3

Depends, Imports or LinkingTo, most downloaded first

LISTO SFDesign CAs

How these are counted

Code & Tests

Datasets

People & History

People (2)

Paul Egeler

Author, Maintainer since 1.6.1 (2025) · added in 0.2.0

Os Keyes

Author · added in 0.2.0

Previously maintained by Os Keyes (0.1.0 to 1.6.0).

Listed in earlier versions (1)

Oliver Keyes

no longer listed · 0.1.0

Releases (10)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
1.6.1Latest
record
2025-02-04 · current release · diff ↗
R
R 4.4.0 released · 2024-04-24
1.6.0
record
2024-01-09 · diff ↗
1.5.2
record
2023-12-19 · diff ↗
unarchivedReturned to CRAN
2023-11-08
1.5.1
record
2023-11-08 · diff ↗
archivedRemoved from CRAN
2023-11-06
issues were not corrected despite reminders
1.5.0
record
2023-10-08 · diff ↗ ·
added 3 exports
phi, prime_factors, ruth_aaron_pairs
R
R 4.3.0 released · 2023-04-21
1.4.0
record
2022-09-12 · diff ↗ ·
removed 3 exports
phi, prime_factors, ruth_aaron_pairs

added 2 exports
Rgcd, Rscm
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
1.1.0
record
2020-09-03 · diff ↗ ·
added 4 exports
coprime, gcd, phi, scm
1.0.0
record
2020-07-29 · diff ↗ ·
added 4 exports
generate_n_primes, nth_prime, nth_prime_estimate, prime_count

Show 8 earlier eventsHide 8 earlier events

0.2.0
record
2020-07-27 · diff ↗ ·
added 12 exports
cousin_primes, k_tuple, next_prime, prev_prime, prime_factors, primorial_n, primorial_p, ruth_aaron_pairs, sexy_prime_triplets, sexy_primes, third_cousin_primes, twin_primes
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
R
R 3.4.0 released · 2017-04-21
R
R 3.3.0 released · 2016-05-03
0.1.0
record
2015-06-22
R
R 3.2.0 released · 2015-04-16

Package metadata

First published: 2015-06-22
Total releases: 10 / 11 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 4.0
Bundled data: 0.9 KB / 1 file
Download size: 22 KB

Appears in task views

Numerical Mathematics

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("primes")

Format

Egeler, P., & Keyes, O. (2025). primes: Fast Functions for Prime Numbers (Version 1.6.1) [Computer software]. https://doi.org/10.32614/CRAN.package.primes

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for primes version 1.6.1 [Data set]. HJJB, LLC. Data release v2026-10-18. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-18, which the citation names so these numbers can be found later. More on citing and the projects behind them.

Report a problem with this page →