# RandomPrime

RandomPrime[{imin,imax}]

gives a pseudorandom prime number in the range imin to imax.

RandomPrime[imax]

gives a pseudorandom prime number in the range 2 to imax.

RandomPrime[range,n]

gives a list of n pseudorandom primes.

# Details • A random prime is computed by repeatedly generating pseudorandom integers in the specified range until the desired number of primes has been produced.
• If no prime exists in the specified range, the input is returned unevaluated with an error message.
• RandomPrime[{imin,imax}] chooses primes between imin and imax with equal probability.
• RandomPrime[imax] is equivalent to RandomPrime[{2,imax}].
• RandomPrime[range,{n1,n2,}] gives an n1×n2× array of primes.

# Examples

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## Basic Examples(3)

A random prime less than 100:

A random 10-digit prime:

A list of 10 pseudorandom primes less than 100:

## Scope(1)

Generate a random array of primes less than 11 of dimension 4×5:

## Applications(1)

Find two large primes for use in RSA encryption:

This is a 640-binary-digit number:

Its binary representation:

## Properties & Relations(1)

Sampling of primes from 1 to 100:

The distribution is uniform over the primes:

## Possible Issues(1)

If no prime exists in the specified range, an error message is returned: 