A202562 Carmichael numbers whose prime factors do not divide any smaller Carmichael number.

561, 84350561, 851703301, 2436691321, 34138047673, 60246018673, 63280622521, 83946864769, 110296864801, 114919915021, 155999871721, 225593397919, 342267565249, 534919693681, 660950414671, 733547013841, 1079942171239, 1301203515361, 1333189866793

Offset: 1

Author

Arkadiusz Wesolowski, Dec 21 2011

Keywords

• nonn

Comments

Note that all terms so far have only three prime factors.

Examples

			a(2) = 84350561 because 84350561 = 107*743*1061 and the smaller Carmichael numbers do not have the factors 107, 743 or 1061.
		

Links

• Amiram Eldar, Table of n, a(n) for n = 1..10000 (calculated using data from Claude Goutier; terms 1..1377, terms below 10^18, from Donovan Johnson)
• Claude Goutier, Compressed text file carm10e22.gz containing all the Carmichael numbers up to 10^22.
• Eric Weisstein's World of Mathematics, Carmichael Number.
• Index entries for sequences related to Carmichael numbers.

Crossrefs

Cf. A002997, A087788.