2 × 5² × 31 × 139

Prime Factor Structure

Factorization String 2 × 5^2 × 31 × 139

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 416,640

Proper Divisor Sum 201,190

Digit Sum / Digital Root 17 (Root: 8)

Adjacent Primes #215447 ← → #215459

1 2 5 10 25 31 50 62 139 155 278 310 695 775 1,390 1,550 3,475 4,309 6,950 8,618 21,545 43,090 107,725 215,450

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

215,450 107,725 323,176 161,588 80,794 40,397 121,192 60,596 30,298 15,149 45,448 22,724 11,362 5,681 17,044 8,522 4,261 12,784 6,392 3,196 1,598 799 2,398 1,199 3,598 1,799 5,398 2,699 8,098 4,049 12,148 6,074 3,037 9,112 4,556 2,278 1,139 3,418 1,709 5,128 2,564 1,282 641 1,924 962 481 1,444 722 361 1,084 542 271 814 407 1,222 611 1,834 917 2,752 1,376

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