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You assume that question could only have been with innate knowledge of the answer. But just by querying a search engine with two of the numbers I was able to get the same link: https://www.google.com/search?q=%22627418%22+%2219223530%22 With DuckDuckGo it is even the only search result for the same two numbers and I didn't even have to quote them: https://duckduckgo.com/?q=627418+19223530

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Tangentially related, I've had some success Googling constants before. For example, I once got interested in the constants in the Harris-Benedict function for estimating basal metabolic rates. By searching for these constants, I quickly found the original text and some other interesting related material.

This approach generalizes to strings as well. In my field of computer networking, you're an easy search away from finding out what 0x0800 means with very little context.

Searches can also work for numbers that don't look familiar. For example, you'd immediate recognize the first few digits of π, but you might not so easily recognize π²≈9.86960440109.

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