137 × 139

Prime Factor Structure

Factorization String 137 × 139

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 19,320

Proper Divisor Sum 277

Digit Sum / Digital Root 17 (Root: 8)

Adjacent Primes #19037 ← → #19051

1 137 139 19,043

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

19,043 57,130 28,565 85,696 42,848 21,424 10,712 5,356 2,678 1,339 4,018 2,009 6,028 3,014 1,507 4,522 2,261 6,784 3,392 1,696 848 424 212 106 53 160 80 40 20 10 5 16 8 4 2 1

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