999,999,937

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Number

$999 \, 999 \, 937$ is:

A prime number whose index is over $50$ million.

The largest prime number with $9$ digits.

Also see

• Largest 9-Digit Prime Number

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Sources

• 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $999,999,937$