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A112783
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Beginning with 2, primes of the form: least multiple of the previous term followed by a 7. Beginning with 2, a(n) is the least prime of the form k*a(n-1)*10 +7.
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2, 47, 947, 18947, 947357, 47367857, 4263107137, 682097141927, 545677713541607, 65481325624992847, 21608837456247639517, 4105679116687051508237, 944306196838021846894517
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