13 × 37 × 643

Prime Factor Structure

Factorization String 13 × 37 × 643

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 342,608

Proper Divisor Sum 33,325

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #309277 ← → #309289

1 13 37 481 643 8,359 23,791 309,283

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

309,283 927,850 463,925 1,391,776 695,888 347,944 173,972 86,986 43,493 130,480 65,240 32,620 16,310 8,155 24,466 12,233 36,700 18,350 9,175 27,526 13,763 41,290 20,645 61,936 30,968 15,484 7,742 3,871 11,614 5,807 17,422 8,711 26,134 13,067 39,202 19,601 58,804 29,402 14,701 44,104 22,052 11,026 5,513 16,540 8,270 4,135 12,406 6,203 18,610 9,305 27,916 13,958 6,979 20,938 10,469 31,408 15,704 7,852 3,926 1,963

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