I can find various results where that number is negative (Faltings height of LMFDB elliptic curve 1688.c1; north east longitude of el Baix Segura) but not where the number is positive. It's part of a DOI string though, but that's not really a number.

Probably I'm being nerd sniped. https://xkcd.com/356/

Not 451. I'm disappointed at the missed opportunity.