2,515,553

2515553

Starting at 2,515,553, the Collatz iteration reaches 1 after 130 steps. The first transition is 7546660; the starting value is odd with 2 positive divisors.

Prime Factor Structure

Factorization String 2515553

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 2,515,554

Proper Divisor Sum 1

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #2515537 ← → #2515561

Radix Representation

Decimal	2515553
Binary	1001100110001001100001 (22 bits)
Octal	0o11461141
Hexadecimal	0x266261

Divisor Catalog (2)

1 2,515,553

Collatz Trajectory (130 steps to reach 1)

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

2,515,553 7,546,660 3,773,330 1,886,665 5,659,996 2,829,998 1,414,999 4,244,998 2,122,499 6,367,498 3,183,749 9,551,248 4,775,624 2,387,812 1,193,906 596,953 1,790,860 895,430 447,715 1,343,146 671,573 2,014,720 1,007,360 503,680 251,840 125,920 62,960 31,480 15,740 7,870 3,935 11,806 5,903 17,710 8,855 26,566 13,283 39,850 19,925 59,776 29,888 14,944 7,472 3,736 1,868 934 467 1,402 701 2,104 1,052 526 263 790 395 1,186 593 1,780 890 445

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