3 × 5 × 7 × 20521

Prime Factor Structure

Factorization String 3 × 5 × 7 × 20521

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 3,940,224

Proper Divisor Sum 1,785,519

Digit Sum / Digital Root 24 (Root: 6)

Adjacent Primes #2154683 ← → #2154707

1 3 5 7 15 21 35 105 20,521 61,563 102,605 143,647 307,815 430,941 718,235 2,154,705

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

2,154,705 6,464,116 3,232,058 1,616,029 4,848,088 2,424,044 1,212,022 606,011 1,818,034 909,017 2,727,052 1,363,526 681,763 2,045,290 1,022,645 3,067,936 1,533,968 766,984 383,492 191,746 95,873 287,620 143,810 71,905 215,716 107,858 53,929 161,788 80,894 40,447 121,342 60,671 182,014 91,007 273,022 136,511 409,534 204,767 614,302 307,151 921,454 460,727 1,382,182 691,091 2,073,274 1,036,637 3,109,912 1,554,956 777,478 388,739 1,166,218 583,109 1,749,328 874,664 437,332 218,666 109,333 328,000 164,000 82,000

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