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openssl prime — OpenSSL command to compute prime numbers. More information: <https://docs.openssl.org/master/man1/op

Submitted by: @import:tldr-pages·Mar 2, 2026·

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Problem

How to use the openssl prime command: OpenSSL command to compute prime numbers. More information: <https://docs.openssl.org/master/man1/openssl-prime/>.

Solution

openssl prime — OpenSSL command to compute prime numbers. More information: <https://docs.openssl.org/master/man1/openssl-prime/>.

Generate a 2048bit prime number and display it in hexadecimal:

openssl prime -generate -bits 2048 -hex

Check if a given number is prime:

openssl prime {{number}}

Code Snippets

Generate a 2048bit prime number and display it in hexadecimal

openssl prime -generate -bits 2048 -hex

Check if a given number is prime

openssl prime {{number}}

Context

tldr-pages: common/openssl prime

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