3 × 5 × 509 × 521

Prime Factor Structure

Factorization String 3 × 5 × 509 × 521

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 6,389,280

Proper Divisor Sum 2,411,445

Digit Sum / Digital Root 42 (Root: 6)

Adjacent Primes #3977819 ← → #3977849

1 3 5 15 509 521 1,527 1,563 2,545 2,605 7,635 7,815 265,189 795,567 1,325,945 3,977,835

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

3,977,835 11,933,506 5,966,753 17,900,260 8,950,130 4,475,065 13,425,196 6,712,598 3,356,299 10,068,898 5,034,449 15,103,348 7,551,674 3,775,837 11,327,512 5,663,756 2,831,878 1,415,939 4,247,818 2,123,909 6,371,728 3,185,864 1,592,932 796,466 398,233 1,194,700 597,350 298,675 896,026 448,013 1,344,040 672,020 336,010 168,005 504,016 252,008 126,004 63,002 31,501 94,504 47,252 23,626 11,813 35,440 17,720 8,860 4,430 2,215 6,646 3,323 9,970 4,985 14,956 7,478 3,739 11,218 5,609 16,828 8,414 4,207

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