5 × 13 × 137 × 421

Prime Factor Structure

Factorization String 5 × 13 × 137 × 421

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 4,891,824

Proper Divisor Sum 1,142,819

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #3748991 ← → #3749021

1 5 13 65 137 421 685 1,781 2,105 5,473 8,905 27,365 57,677 288,385 749,801 3,749,005

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

3,749,005 11,247,016 5,623,508 2,811,754 1,405,877 4,217,632 2,108,816 1,054,408 527,204 263,602 131,801 395,404 197,702 98,851 296,554 148,277 444,832 222,416 111,208 55,604 27,802 13,901 41,704 20,852 10,426 5,213 15,640 7,820 3,910 1,955 5,866 2,933 8,800 4,400 2,200 1,100 550 275 826 413 1,240 620 310 155 466 233 700 350 175 526 263 790 395 1,186 593 1,780 890 445 1,336 668

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