2,623,517

13 × 201809

Starting at 2,623,517, the Collatz iteration reaches 1 after 148 steps. The first transition is 7870552; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 13 × 201809

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 2,825,340

Proper Divisor Sum 201,823

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #2623487 ← → #2623529

Radix Representation

Decimal	2623517
Binary	1010000000100000011101 (22 bits)
Octal	0o12004035
Hexadecimal	0x28081D

Divisor Catalog (4)

1 13 201,809 2,623,517

Collatz Trajectory (148 steps to reach 1)

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

2,623,517 7,870,552 3,935,276 1,967,638 983,819 2,951,458 1,475,729 4,427,188 2,213,594 1,106,797 3,320,392 1,660,196 830,098 415,049 1,245,148 622,574 311,287 933,862 466,931 1,400,794 700,397 2,101,192 1,050,596 525,298 262,649 787,948 393,974 196,987 590,962 295,481 886,444 443,222 221,611 664,834 332,417 997,252 498,626 249,313 747,940 373,970 186,985 560,956 280,478 140,239 420,718 210,359 631,078 315,539 946,618 473,309 1,419,928 709,964 354,982 177,491 532,474 266,237 798,712 399,356 199,678 99,839

← Previous Integer #2,623,516 Browse Full Index Next Integer #2,623,518 →