3 × 5 × 7³ × 43

Prime Factor Structure

Factorization String 3 × 5 × 7^3 × 43

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 32

Divisor Sum (σ) 422,400

Proper Divisor Sum 201,165

Digit Sum / Digital Root 15 (Root: 6)

Adjacent Primes #221233 ← → #221239

1 3 5 7 15 21 35 43 49 105 129 147 215 245 301 343 645 735 903 1,029 1,505 1,715 2,107 4,515 5,145 6,321 10,535 14,749 31,605 44,247 73,745 221,235

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

221,235 663,706 331,853 995,560 497,780 248,890 124,445 373,336 186,668 93,334 46,667 140,002 70,001 210,004 105,002 52,501 157,504 78,752 39,376 19,688 9,844 4,922 2,461 7,384 3,692 1,846 923 2,770 1,385 4,156 2,078 1,039 3,118 1,559 4,678 2,339 7,018 3,509 10,528 5,264 2,632 1,316 658 329 988 494 247 742 371 1,114 557 1,672 836 418 209 628 314 157 472 236

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