According to OEIS , the number $$10^{509546}+3$$ is a (I guess probable) prime with digit sum $4$ in base $10$.
Is it the largest known such prime ?
What is the largest known such prime if it must contain four ones (in base $10$) ?
2026-03-25 12:22:31.1774441351
Largest known prime with digit sum $4$?
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