131 × 139

Prime Factor Structure

Factorization String 131 × 139

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 18,480

Proper Divisor Sum 271

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #18199 ← → #18211

1 131 139 18,209

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

18,209 54,628 27,314 13,657 40,972 20,486 10,243 30,730 15,365 46,096 23,048 11,524 5,762 2,881 8,644 4,322 2,161 6,484 3,242 1,621 4,864 2,432 1,216 608 304 152 76 38 19 58 29 88 44 22 11 34 17 52 26 13 40 20 10 5 16 8 4 2 1

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