3 × 19 × 293 × 521

Prime Factor Structure

Factorization String 3 × 19 × 293 × 521

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 12,277,440

Proper Divisor Sum 3,576,219

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #8701211 ← → #8701243

1 3 19 57 293 521 879 1,563 5,567 9,899 16,701 29,697 152,653 457,959 2,900,407 8,701,221

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

8,701,221 26,103,664 13,051,832 6,525,916 3,262,958 1,631,479 4,894,438 2,447,219 7,341,658 3,670,829 11,012,488 5,506,244 2,753,122 1,376,561 4,129,684 2,064,842 1,032,421 3,097,264 1,548,632 774,316 387,158 193,579 580,738 290,369 871,108 435,554 217,777 653,332 326,666 163,333 490,000 245,000 122,500 61,250 30,625 91,876 45,938 22,969 68,908 34,454 17,227 51,682 25,841 77,524 38,762 19,381 58,144 29,072 14,536 7,268 3,634 1,817 5,452 2,726 1,363 4,090 2,045 6,136 3,068 1,534

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