3 × 37 × 73 × 79

Prime Factor Structure

Factorization String 3 × 37 × 73 × 79

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 899,840

Proper Divisor Sum 259,703

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #640127 ← → #640139

1 3 37 73 79 111 219 237 2,701 2,923 5,767 8,103 8,769 17,301 213,379 640,137

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

640,137 1,920,412 960,206 480,103 1,440,310 720,155 2,160,466 1,080,233 3,240,700 1,620,350 810,175 2,430,526 1,215,263 3,645,790 1,822,895 5,468,686 2,734,343 8,203,030 4,101,515 12,304,546 6,152,273 18,456,820 9,228,410 4,614,205 13,842,616 6,921,308 3,460,654 1,730,327 5,190,982 2,595,491 7,786,474 3,893,237 11,679,712 5,839,856 2,919,928 1,459,964 729,982 364,991 1,094,974 547,487 1,642,462 821,231 2,463,694 1,231,847 3,695,542 1,847,771 5,543,314 2,771,657 8,314,972 4,157,486 2,078,743 6,236,230 3,118,115 9,354,346 4,677,173 14,031,520 7,015,760 3,507,880 1,753,940 876,970

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