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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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

Views

Author

Donovan Johnson, Jan 15 2009

Keywords

Comments

For exactly 9 distinct prime factors, a(1) = 223092870 and a(2) = 5702759516090.
a(5) > 2 * 10^15. - Toshitaka Suzuki, Jun 23 2025

Crossrefs

Cf. A087977, A087978, A138206, A138207.

Extensions

a(4) from Toshitaka Suzuki, Jun 23 2025

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