7² × 13 × 19 × 43

Prime Factor Structure

Factorization String 7^2 × 13 × 19 × 43

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 702,240

Proper Divisor Sum 181,811

Digit Sum / Digital Root 22 (Root: 4)

Adjacent Primes #520427 ← → #520433

1 7 13 19 43 49 91 133 247 301 559 637 817 931 1,729 2,107 3,913 5,719 10,621 12,103 27,391 40,033 74,347 520,429

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

520,429 1,561,288 780,644 390,322 195,161 585,484 292,742 146,371 439,114 219,557 658,672 329,336 164,668 82,334 41,167 123,502 61,751 185,254 92,627 277,882 138,941 416,824 208,412 104,206 52,103 156,310 78,155 234,466 117,233 351,700 175,850 87,925 263,776 131,888 65,944 32,972 16,486 8,243 24,730 12,365 37,096 18,548 9,274 4,637 13,912 6,956 3,478 1,739 5,218 2,609 7,828 3,914 1,957 5,872 2,936 1,468 734 367 1,102 551

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