13 × 31 × 47

Prime Factor Structure

Factorization String 13 × 31 × 47

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 21,504

Proper Divisor Sum 2,563

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #18919 ← → #18947

1 13 31 47 403 611 1,457 18,941

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

18,941 56,824 28,412 14,206 7,103 21,310 10,655 31,966 15,983 47,950 23,975 71,926 35,963 107,890 53,945 161,836 80,918 40,459 121,378 60,689 182,068 91,034 45,517 136,552 68,276 34,138 17,069 51,208 25,604 12,802 6,401 19,204 9,602 4,801 14,404 7,202 3,601 10,804 5,402 2,701 8,104 4,052 2,026 1,013 3,040 1,520 760 380 190 95 286 143 430 215 646 323 970 485 1,456 728

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