3 × 5 × 137 × 139

Prime Factor Structure

Factorization String 3 × 5 × 137 × 139

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 463,680

Proper Divisor Sum 178,035

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #285643 ← → #285661

1 3 5 15 137 139 411 417 685 695 2,055 2,085 19,043 57,129 95,215 285,645

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

285,645 856,936 428,468 214,234 107,117 321,352 160,676 80,338 40,169 120,508 60,254 30,127 90,382 45,191 135,574 67,787 203,362 101,681 305,044 152,522 76,261 228,784 114,392 57,196 28,598 14,299 42,898 21,449 64,348 32,174 16,087 48,262 24,131 72,394 36,197 108,592 54,296 27,148 13,574 6,787 20,362 10,181 30,544 15,272 7,636 3,818 1,909 5,728 2,864 1,432 716 358 179 538 269 808 404 202 101 304

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