3 × 19 × 137 × 149

Prime Factor Structure

Factorization String 3 × 19 × 137 × 149

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 1,656,000

Proper Divisor Sum 492,459

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #1163521 ← → #1163543

1 3 19 57 137 149 411 447 2,603 2,831 7,809 8,493 20,413 61,239 387,847 1,163,541

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

1,163,541 3,490,624 1,745,312 872,656 436,328 218,164 109,082 54,541 163,624 81,812 40,906 20,453 61,360 30,680 15,340 7,670 3,835 11,506 5,753 17,260 8,630 4,315 12,946 6,473 19,420 9,710 4,855 14,566 7,283 21,850 10,925 32,776 16,388 8,194 4,097 12,292 6,146 3,073 9,220 4,610 2,305 6,916 3,458 1,729 5,188 2,594 1,297 3,892 1,946 973 2,920 1,460 730 365 1,096 548 274 137 412 206

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