trainless
Third-person singular simple present indicative form of fail safe
(mathematics) A prime number that is one more or one less than a factorial. For example, 7 is a factorial prime, since 3! + 1 = 7.
Without a train (in various senses).
A village and civil parish in Selby district, North Yorkshire, England (OS grid ref SE5923). / A community in Bluewater, Huron County, Ontario, Canada.
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