7 × 139 × 661

Prime Factor Structure

Factorization String 7 × 139 × 661

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 741,440

Proper Divisor Sum 98,287

Digit Sum / Digital Root 22 (Root: 4)

Adjacent Primes #643129 ← → #643183

1 7 139 661 973 4,627 91,879 643,153

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

643,153 1,929,460 964,730 482,365 1,447,096 723,548 361,774 180,887 542,662 271,331 813,994 406,997 1,220,992 610,496 305,248 152,624 76,312 38,156 19,078 9,539 28,618 14,309 42,928 21,464 10,732 5,366 2,683 8,050 4,025 12,076 6,038 3,019 9,058 4,529 13,588 6,794 3,397 10,192 5,096 2,548 1,274 637 1,912 956 478 239 718 359 1,078 539 1,618 809 2,428 1,214 607 1,822 911 2,734 1,367 4,102

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