Five hundred and twenty-three.
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according to
@robmyers algorithm, up to a 1000, there are 4, only 1 prime. -
You have them available to share?
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four hundred and fifty-one = 451 four hundred and eighty-five = 485 four hundred and eighty-six = 486
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Excellent, thanks. (Interesting how tightly-clustered they are.)
End of conversation
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