13 × 21391

Prime Factor Structure

Factorization String 13 × 21391

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 299,488

Proper Divisor Sum 21,405

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #278071 ← → #278087

1 13 21,391 278,083

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

278,083 834,250 417,125 1,251,376 625,688 312,844 156,422 78,211 234,634 117,317 351,952 175,976 87,988 43,994 21,997 65,992 32,996 16,498 8,249 24,748 12,374 6,187 18,562 9,281 27,844 13,922 6,961 20,884 10,442 5,221 15,664 7,832 3,916 1,958 979 2,938 1,469 4,408 2,204 1,102 551 1,654 827 2,482 1,241 3,724 1,862 931 2,794 1,397 4,192 2,096 1,048 524 262 131 394 197 592 296

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