3 × 5 × 17 × 2521

Prime Factor Structure

Factorization String 3 × 5 × 17 × 2521

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 1,089,504

Proper Divisor Sum 446,649

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #642853 ← → #642869

1 3 5 15 17 51 85 255 2,521 7,563 12,605 37,815 42,857 128,571 214,285 642,855

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

642,855 1,928,566 964,283 2,892,850 1,446,425 4,339,276 2,169,638 1,084,819 3,254,458 1,627,229 4,881,688 2,440,844 1,220,422 610,211 1,830,634 915,317 2,745,952 1,372,976 686,488 343,244 171,622 85,811 257,434 128,717 386,152 193,076 96,538 48,269 144,808 72,404 36,202 18,101 54,304 27,152 13,576 6,788 3,394 1,697 5,092 2,546 1,273 3,820 1,910 955 2,866 1,433 4,300 2,150 1,075 3,226 1,613 4,840 2,420 1,210 605 1,816 908 454 227 682

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.