13,129,555

5 × 2625911

13,129,555 factors as 5 × 2625911. Its 4 positive divisors give a proper-divisor sum of 2,625,917, so this integer is deficient. The Collatz stopping time is 148 steps.

Prime Factor Structure

Factorization String 5 × 2625911

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 15,755,472

Proper Divisor Sum 2,625,917

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #13129549 ← → #13129607

Radix Representation

Decimal	13129555
Binary	110010000101011101010011 (24 bits)
Octal	0o62053523
Hexadecimal	0xC85753

Divisor Catalog (4)

1 5 2,625,911 13,129,555

Collatz Trajectory (148 steps to reach 1)

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

13,129,555 39,388,666 19,694,333 59,083,000 29,541,500 14,770,750 7,385,375 22,156,126 11,078,063 33,234,190 16,617,095 49,851,286 24,925,643 74,776,930 37,388,465 112,165,396 56,082,698 28,041,349 84,124,048 42,062,024 21,031,012 10,515,506 5,257,753 15,773,260 7,886,630 3,943,315 11,829,946 5,914,973 17,744,920 8,872,460 4,436,230 2,218,115 6,654,346 3,327,173 9,981,520 4,990,760 2,495,380 1,247,690 623,845 1,871,536 935,768 467,884 233,942 116,971 350,914 175,457 526,372 263,186 131,593 394,780 197,390 98,695 296,086 148,043 444,130 222,065 666,196 333,098 166,549 499,648

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