A087978
a(n) is the first term in a chain of at least n consecutive numbers, each having exactly m = 5 distinct prime factors.
Original entry on oeis.org
2310, 254540, 1042404, 21871365, 129963314, 830692265, 4617927894, 18297409143, 41268813542, 287980277114, 1182325618032, 6455097761454, 14207465691240, 54049709480208, 90987640183352, 546525829796442, 546525829796442
Offset: 1
-
k=1; Do[While[Union[Table[Length[FactorInteger[i]], {i, k, k+n-1}]]!={5}, k++ ]; Print[k], {n, 1, 8}]
A138206
a(n) is the first term in a chain of at least n consecutive numbers each with exactly 6 distinct prime factors.
Original entry on oeis.org
30030, 11243154, 323567034, 7933641735, 45212320502, 626804494291, 7563009743844, 83793300096830, 395732828592408
Offset: 1
A138207
a(n) is the first term in a chain of at least n consecutive numbers each with exactly 7 distinct prime factors.
Original entry on oeis.org
510510, 965009045, 30989984674, 1673602584618, 66298619667606
Offset: 1
A154573
a(n) is the first term in a chain of at least n consecutive numbers each with exactly 8 distinct prime factors.
Original entry on oeis.org
9699690, 65893166030, 10042712381260, 1126299564879684
Offset: 1
A185042
Initial term of first run of exactly n consecutive numbers with 4 distinct prime factors.
Original entry on oeis.org
210, 7314, 37960, 134043, 357642, 2713332, 1217250, 14273478, 44939642, 76067298, 163459742, 547163235, 2081479430, 2771263512, 11715712410, 17911205580, 56608713884, 203594236366, 118968284928, 2500769994070, 3157129230489, 22498525938216, 585927201062
Offset: 1
a(6) > a(7) because the first run of 6 consecutive integers i with A001221(i)=4 is not maximal.
A384507
Initial term of first run of exactly n consecutive numbers with exactly 5 distinct prime factors.
Original entry on oeis.org
2310, 254540, 1042404, 21871365, 129963314, 830692265, 4617927894, 18297409143, 41268813542, 287980277114, 1182325618032, 6455097761454, 14207465691240, 54049709480208, 90987640183352, 1164838922284960, 546525829796442
Offset: 1
a(16) > a(17) because the first run of 16 consecutive integers i with A001221(i)=5 is not a maximal run.
Showing 1-6 of 6 results.
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