3 × 7 × 13 × 157

Prime Factor Structure

Factorization String 3 × 7 × 13 × 157

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 70,784

Proper Divisor Sum 27,923

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #42859 ← → #42863

1 3 7 13 21 39 91 157 273 471 1,099 2,041 3,297 6,123 14,287 42,861

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

42,861 128,584 64,292 32,146 16,073 48,220 24,110 12,055 36,166 18,083 54,250 27,125 81,376 40,688 20,344 10,172 5,086 2,543 7,630 3,815 11,446 5,723 17,170 8,585 25,756 12,878 6,439 19,318 9,659 28,978 14,489 43,468 21,734 10,867 32,602 16,301 48,904 24,452 12,226 6,113 18,340 9,170 4,585 13,756 6,878 3,439 10,318 5,159 15,478 7,739 23,218 11,609 34,828 17,414 8,707 26,122 13,061 39,184 19,592 9,796

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