True Random Number Service

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Random Sequence Generator

This form allows you to generate randomized sequences of integers. The randomness comes from atmospheric noise, which for many purposes is better than the pseudo-random number algorithms typically used in computer programs.

Part 1: Sequence Boundaries

Smallest value (limit -1,000,000,000)

Largest value (limit +1,000,000,000)

Format in column(s)

The length of the sequence (the largest minus the smallest value plus 1) can be no greater than 10,000.

Part 2: Choose Output Format

How do you want the sequence to be shown?
On a nicely formatted web page (type text/html)
As a bare-bones text document (type text/plain)

Part 3: Choose Randomization

Do you want a new randomization or one that was prepared earlier? [explain this]
Generate your own personal randomization right now
Use pregenerated randomization from
Use pregenerated randomization based on persistent identifier (max 64 alphanumeric characters)

Part 4: Go!

Be patient! It may take a little while to generate your sequence...

Note: A randomized sequence does not contain duplicates (the numbers are like raffle tickets drawn from a hat). There is also the Integer Generator which generates the numbers independently of each other (like rolls of a die) and where each number can occur more than once.