3 × 5 × 7 × 1997

Prime Factor Structure

Factorization String 3 × 5 × 7 × 1997

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 383,616

Proper Divisor Sum 173,931

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #209669 ← → #209687

1 3 5 7 15 21 35 105 1,997 5,991 9,985 13,979 29,955 41,937 69,895 209,685

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

209,685 629,056 314,528 157,264 78,632 39,316 19,658 9,829 29,488 14,744 7,372 3,686 1,843 5,530 2,765 8,296 4,148 2,074 1,037 3,112 1,556 778 389 1,168 584 292 146 73 220 110 55 166 83 250 125 376 188 94 47 142 71 214 107 322 161 484 242 121 364 182 91 274 137 412 206 103 310 155 466 233

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