7 × 19 × 139 × 211

Prime Factor Structure

Factorization String 7 × 19 × 139 × 211

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 4,748,800

Proper Divisor Sum 848,043

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #3900749 ← → #3900779

1 7 19 133 139 211 973 1,477 2,641 4,009 18,487 28,063 29,329 205,303 557,251 3,900,757

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

3,900,757 11,702,272 5,851,136 2,925,568 1,462,784 731,392 365,696 182,848 91,424 45,712 22,856 11,428 5,714 2,857 8,572 4,286 2,143 6,430 3,215 9,646 4,823 14,470 7,235 21,706 10,853 32,560 16,280 8,140 4,070 2,035 6,106 3,053 9,160 4,580 2,290 1,145 3,436 1,718 859 2,578 1,289 3,868 1,934 967 2,902 1,451 4,354 2,177 6,532 3,266 1,633 4,900 2,450 1,225 3,676 1,838 919 2,758 1,379 4,138

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