13 × 1657

Prime Factor Structure

Factorization String 13 × 1657

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 23,212

Proper Divisor Sum 1,671

Digit Sum / Digital Root 13 (Root: 4)

Adjacent Primes #21529 ← → #21557

1 13 1,657 21,541

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

21,541 64,624 32,312 16,156 8,078 4,039 12,118 6,059 18,178 9,089 27,268 13,634 6,817 20,452 10,226 5,113 15,340 7,670 3,835 11,506 5,753 17,260 8,630 4,315 12,946 6,473 19,420 9,710 4,855 14,566 7,283 21,850 10,925 32,776 16,388 8,194 4,097 12,292 6,146 3,073 9,220 4,610 2,305 6,916 3,458 1,729 5,188 2,594 1,297 3,892 1,946 973 2,920 1,460 730 365 1,096 548 274 137

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