Dear R users

Is there any way to increase the decimal accuracy for the normal probability distribution? When one needs an accurate p-value for instance this is provided by

pnorm(10,lower.tail=F)
[1] 7.619853e-24

However, what happens when instead of a P[X<x], a more accurate P[X>=x] is the objective. 

Thank you in advance for your responses.

Dimitris
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