Last updated: April 10, 2026
At PrimeOrNot, accessible at primeornot.com, we respect your privacy and are committed to protecting it. This Privacy Policy explains what information we collect, how we use it, when it may be shared, and what choices you have when using our website and services.
This Privacy Policy applies to all visitors, users, and others who access or use PrimeOrNot. By using this website, you agree to the practices described in this Privacy Policy.
1. Who We Are
PrimeOrNot is an online tool and informational website designed to help users check whether a number is prime and access related mathematical content and utility features.
If you have any privacy-related questions, requests, or concerns, you may contact us at support@primeornot.com.
2. Information We Collect
We may collect limited information in the following ways:
2.1 Information You Voluntarily Provide
If you contact us directly by email, we may collect the information you choose to provide, such as your name, email address, message content, attachments, and any other information you include in your communication.
2.2 Information Collected Automatically
When you visit PrimeOrNot, certain technical and usage information may be collected automatically, either by us or by trusted third-party service providers. This information may include your IP address, browser type, device type, operating system, screen size, language settings, referring pages, exit pages, approximate geographic location, date and time of access, and general interaction data.
2.3 Tool Input and Functional Data
When you use our prime number checker or related tools, the numbers or inputs you enter may be processed in order to return results, improve performance, prevent abuse, diagnose errors, and optimize the user experience. We do not treat ordinary mathematical inputs as sensitive personal information, but such inputs may still be temporarily processed through our systems or supporting service providers.
2.4 Cookies and Similar Technologies
We and our partners may use cookies, pixels, local storage, tags, scripts, and similar technologies to operate the website, remember preferences, analyze traffic, measure performance, personalize content, prevent fraud, and support advertising.
Cookies may be session-based or persistent. Some cookies are necessary for the website to function properly, while others support analytics, preferences, advertising, and security.
3. How We Use Information
We may use collected information for the following purposes:
- To operate, maintain, secure, and improve PrimeOrNot
- To provide prime-checking results and related features
- To respond to messages, inquiries, and support requests
- To monitor performance, uptime, reliability, and error rates
- To understand visitor behavior and improve usability and content
- To detect, investigate, and prevent spam, abuse, fraud, and unauthorized activity
- To comply with applicable laws, regulations, legal processes, and enforceable governmental requests
- To protect our rights, users, systems, business operations, and legal interests
- To display ads and measure ad performance where permitted
4. Google AdSense and Advertising
PrimeOrNot may use Google AdSense and other advertising partners to display ads on our website. These partners may use cookies, local storage, and similar technologies to serve ads based on your visit to this and other websites.
Google and its partners may use advertising cookies to personalize ads, limit repetition, measure campaign effectiveness, and help maintain the advertising ecosystem. Third-party vendors, including Google, may use cookies to serve ads based on a user’s prior visits to our website or other websites.
You may learn more about how Google uses information from sites or apps that use its services by reviewing Google’s applicable privacy and advertising documentation. You may also manage ad personalization settings through Google’s ad settings tools, where available in your region.
We do not control all technologies used by third-party advertisers, ad networks, or ad measurement providers, and their data practices are subject to their own privacy policies.
5. Analytics and Measurement
We may use analytics and measurement tools provided by third parties to understand traffic patterns, visitor engagement, page performance, device usage, approximate location trends, referrals, and feature usage. These tools may collect data through cookies, pixels, scripts, or similar technologies.
Analytics data helps us improve content quality, site speed, feature reliability, and overall user experience. We may use aggregated and de-identified information for internal analysis, product improvement, reporting, and business planning.
6. Legal Bases for Processing
Where applicable under data protection laws, we process information on one or more of the following legal bases: your consent, performance of a service you request, compliance with legal obligations, protection of vital interests, and our legitimate interests such as operating, securing, improving, and monetizing PrimeOrNot, provided those interests are not overridden by your rights and freedoms.
7. How We Share Information
We do not sell your personal information in the traditional sense of directly exchanging it for money. However, we may share information in limited circumstances as described below:
- With service providers who help us host, secure, analyze, maintain, monetize, and operate the website
- With advertising, analytics, and measurement partners, subject to applicable law and your choices
- With professional advisors such as legal, accounting, compliance, or insurance providers when reasonably necessary
- In connection with a merger, acquisition, financing, asset sale, reorganization, bankruptcy, or similar transaction
- To comply with legal obligations, court orders, lawful requests, or regulatory requirements
- To protect our rights, users, systems, property, and safety, or the rights, systems, property, and safety of others
- With your consent or at your direction
We may also share aggregated, anonymized, or de-identified data that cannot reasonably be used to identify you.
8. Data Retention
We retain information for as long as reasonably necessary to fulfill the purposes described in this Privacy Policy, including operating the website, complying with legal obligations, resolving disputes, enforcing agreements, maintaining security, preventing abuse, and preserving business records.
Retention periods may vary depending on the nature of the data, the purpose of processing, technical requirements, legal obligations, and legitimate business needs. We may retain anonymized or aggregated information for a longer period.
9. International Data Transfers
Your information may be processed, stored, and transferred in countries other than your own, including countries where data protection laws may differ from those in your jurisdiction. By using PrimeOrNot, you understand and acknowledge that your information may be transferred to and processed in such locations, subject to appropriate safeguards where required by law.
10. Data Security
We take reasonable administrative, technical, and organizational measures designed to protect information against unauthorized access, loss, misuse, disclosure, alteration, or destruction. However, no website, platform, server, network, or method of electronic transmission or storage is completely secure, and we cannot guarantee absolute security.
You are responsible for using the website in a secure manner, including avoiding sending sensitive personal information through unsecured channels unless necessary.
11. Your Privacy Rights
Depending on your location and applicable law, you may have rights relating to your personal information. These may include the right to request access, correction, deletion, restriction, objection, portability, and withdrawal of consent where processing is based on consent.
You may also have the right to object to certain profiling or targeted advertising activities, appeal a decision we make regarding your request, or lodge a complaint with an appropriate supervisory authority.
To exercise any applicable privacy rights, contact us at support@primeornot.com. We may need to verify your identity before responding to your request. We may also decline or limit requests where permitted by law.
12. Cookie Choices
Most browsers allow you to control cookies through browser settings. You may choose to block or delete cookies, but some parts of PrimeOrNot may not function properly if you do so. Depending on your region, you may also be presented with additional consent or preference controls regarding cookies and advertising technologies.
You may also manage certain third-party advertising preferences through industry opt-out tools or platform controls where available. These options may not stop all data collection, and some advertising-related technologies may still be used for non-personalized ads, security, frequency capping, reporting, or fraud prevention.
13. Third-Party Links and Services
PrimeOrNot may contain links to third-party websites, products, services, or embedded content that are not owned or controlled by us. We are not responsible for the privacy practices, content, terms, or security of third parties. Your interaction with any third-party site or service is governed by that party’s own terms and privacy policy.
14. Children’s Privacy
PrimeOrNot is not directed to children under the age of 13, and we do not knowingly collect personal information from children under 13. If you believe that a child has provided personal information to us, please contact us at support@primeornot.com, and we will take appropriate steps to review and, where appropriate, delete the information.
Where a higher minimum age is required by local law, we will comply with the applicable legal standard in that jurisdiction.
15. Sensitive Information
PrimeOrNot is not intended for the submission of sensitive personal information. Please do not send us sensitive data such as government identification numbers, financial account details, payment card data, health information, biometric data, or similarly sensitive categories of information unless specifically requested and secured through an appropriate process.
If you voluntarily submit sensitive information, you acknowledge that you do so at your own discretion and subject to the limitations described in this Privacy Policy.
16. Do Not Track
Some web browsers may transmit “Do Not Track” signals. Because there is no universally accepted standard for responding to such signals, PrimeOrNot may not respond to them in all cases unless required by applicable law.
17. Regional Disclosures
Depending on your jurisdiction, additional rights and disclosures may apply under laws such as the General Data Protection Regulation, the UK data protection framework, the California Consumer Privacy Act, or other national and regional privacy laws. Where applicable, we will provide rights and protections required by those laws and may request additional information to verify requests.
Nothing in this Privacy Policy limits any rights you may have under applicable law.
18. Changes to This Privacy Policy
We may update or revise this Privacy Policy at any time to reflect changes in our practices, technologies, legal requirements, or business operations. When we do, we will update the “Last updated” date at the top of this page. Your continued use of PrimeOrNot after any changes become effective constitutes your acceptance of the revised Privacy Policy.
19. Contact Us
If you have questions about this Privacy Policy or would like to submit a privacy-related request, please contact:
PrimeOrNot
Email: support@primeornot.com