6660000000000013
This number is a prime.
666000 0000000013
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A prime number of the form a*10^b+b, where "a" is a beastly number and "b" is the "bad luck" in the Western world. [Marcel]
Submitted: 2026-04-03 15:06:05; Last Modified: 2026-04-03 15:08:59.
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