3 × 5 × 7 × 16381

Prime Factor Structure

Factorization String 3 × 5 × 7 × 16381

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 3,145,344

Proper Divisor Sum 1,425,339

Digit Sum / Digital Root 15 (Root: 6)

Adjacent Primes #1720003 ← → #1720031

1 3 5 7 15 21 35 105 16,381 49,143 81,905 114,667 245,715 344,001 573,335 1,720,005

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

1,720,005 5,160,016 2,580,008 1,290,004 645,002 322,501 967,504 483,752 241,876 120,938 60,469 181,408 90,704 45,352 22,676 11,338 5,669 17,008 8,504 4,252 2,126 1,063 3,190 1,595 4,786 2,393 7,180 3,590 1,795 5,386 2,693 8,080 4,040 2,020 1,010 505 1,516 758 379 1,138 569 1,708 854 427 1,282 641 1,924 962 481 1,444 722 361 1,084 542 271 814 407 1,222 611 1,834

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