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A095215
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Beginning with 2, greatest prime divisor of the concatenation of all previous terms.
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1
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2, 2, 11, 67, 3301, 670001, 670001, 2816573, 1962598272385996001, 13135299156148920427, 8195631610270280813458231, 252695623634706646276208461875953169850197045066143207, 381219345970368698157410442059827141986617742456355454248317851, 381219345970368698157410442059827141986617742456355454248317851
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OFFSET
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1,1
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LINKS
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EXAMPLE
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Greatest prime divisor of 22 is 11, 2211 is 67.
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PROG
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(PARI) lista(nn) = {my(k=2, m); print1(k); for(n=2, nn, print1(", ", k=vecmax(factor(m=eval(Str(m, k)))[, 1]))); } \\ Jinyuan Wang, May 24 2020
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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