Mersenne Tree

h(x) =502e18c4c9e8fb98e8a99c0ce127b157e11dbd1d451d7405da1ba618c6313504


author: unknown

h(x) looks like a cryptographic hash, and refreshing the page shows it changes every 5s. We find that the SHA256 hash of the unix time (floored by 5 seconds) gives us the same hash. Thus the answer is the current unix time (and values within ± a minute are accepted).