99,990,001

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Number

$99 \, 990 \, 001$ (ninety-nine million, nine hundred and ninety thousand and one) is:

The $5 \, 760 \, 923$rd prime number

The $9$th unique period prime after $3$, $11$, $37$, $101$, $9091$, $9901$, $333 \, 667$, $909 \, 091$: its period is $24$:

$\dfrac 1 {99 \, 990 \, 001} = 0 \cdotp \dot 00000 \, 00100 \, 00999 \, 99998 \, 999 \dot 9$

Also see

• Reciprocal of 99,990,001

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