3 × 7 × 53 × 191

Prime Factor Structure

Factorization String 3 × 7 × 53 × 191

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 331,776

Proper Divisor Sum 119,193

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #212579 ← → #212587

1 3 7 21 53 159 191 371 573 1,113 1,337 4,011 10,123 30,369 70,861 212,583

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

212,583 637,750 318,875 956,626 478,313 1,434,940 717,470 358,735 1,076,206 538,103 1,614,310 807,155 2,421,466 1,210,733 3,632,200 1,816,100 908,050 454,025 1,362,076 681,038 340,519 1,021,558 510,779 1,532,338 766,169 2,298,508 1,149,254 574,627 1,723,882 861,941 2,585,824 1,292,912 646,456 323,228 161,614 80,807 242,422 121,211 363,634 181,817 545,452 272,726 136,363 409,090 204,545 613,636 306,818 153,409 460,228 230,114 115,057 345,172 172,586 86,293 258,880 129,440 64,720 32,360 16,180 8,090

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