3 × 7 × 13² × 61

Prime Factor Structure

Factorization String 3 × 7 × 13^2 × 61

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 363,072

Proper Divisor Sum 146,583

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #216481 ← → #216493

1 3 7 13 21 39 61 91 169 183 273 427 507 793 1,183 1,281 2,379 3,549 5,551 10,309 16,653 30,927 72,163 216,489

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

216,489 649,468 324,734 162,367 487,102 243,551 730,654 365,327 1,095,982 547,991 1,643,974 821,987 2,465,962 1,232,981 3,698,944 1,849,472 924,736 462,368 231,184 115,592 57,796 28,898 14,449 43,348 21,674 10,837 32,512 16,256 8,128 4,064 2,032 1,016 508 254 127 382 191 574 287 862 431 1,294 647 1,942 971 2,914 1,457 4,372 2,186 1,093 3,280 1,640 820 410 205 616 308 154 77 232

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