5,218,643

17 × 373 × 823

Starting at 5,218,643, the Collatz iteration reaches 1 after 219 steps. The first transition is 15655930; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 17 × 373 × 823

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 5,547,168

Proper Divisor Sum 328,525

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #5218639 ← → #5218651

Radix Representation

Decimal	5218643
Binary	10011111010000101010011 (23 bits)
Octal	0o23720523
Hexadecimal	0x4FA153

Divisor Catalog (8)

1 17 373 823 6,341 13,991 306,979 5,218,643

Collatz Trajectory (219 steps to reach 1)

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

5,218,643 15,655,930 7,827,965 23,483,896 11,741,948 5,870,974 2,935,487 8,806,462 4,403,231 13,209,694 6,604,847 19,814,542 9,907,271 29,721,814 14,860,907 44,582,722 22,291,361 66,874,084 33,437,042 16,718,521 50,155,564 25,077,782 12,538,891 37,616,674 18,808,337 56,425,012 28,212,506 14,106,253 42,318,760 21,159,380 10,579,690 5,289,845 15,869,536 7,934,768 3,967,384 1,983,692 991,846 495,923 1,487,770 743,885 2,231,656 1,115,828 557,914 278,957 836,872 418,436 209,218 104,609 313,828 156,914 78,457 235,372 117,686 58,843 176,530 88,265 264,796 132,398 66,199 198,598

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